{"id":18892,"date":"2026-11-06T16:27:22","date_gmt":"2026-11-06T08:27:22","guid":{"rendered":"https:\/\/shefmon.com\/?p=18892"},"modified":"2026-10-22T16:48:23","modified_gmt":"2026-10-22T08:48:23","slug":"beauty-device-product-requirement-documents-for-new-machine-development","status":"publish","type":"post","link":"https:\/\/shefmon.com\/de\/beauty-device-product-requirement-documents-for-new-machine-development\/","title":{"rendered":"Beauty Device Product Requirement Documents for New Machine Development"},"content":{"rendered":"<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-18893 size-full\" src=\"https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a.png\" alt=\"\" width=\"1672\" height=\"941\" srcset=\"https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a.png 1672w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-300x169.png 300w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-1024x576.png 1024w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-768x432.png 768w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-1536x864.png 1536w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-18x10.png 18w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-600x338.png 600w, https:\/\/shefmon.com\/wp-content\/uploads\/2026\/10\/exec-50943ba0-0bbd-4101-8b29-74d102f87d7a-150x84.png 150w\" sizes=\"(max-width: 1672px) 100vw, 1672px\" \/><\/p>\n<p>A new beauty device project can begin with an attractive concept, a distributor request, a competitor reference, or a list of desired functions. None of these is detailed enough to guide engineering, sourcing, quality, production, documentation, and service toward the same finished machine. The factory needs a controlled Product Requirement Document, commonly called a PRD.<\/p>\n<p>A beauty device PRD defines what the product must achieve, who it is for, where it will be used, which boundaries apply, and how the team will know whether each requirement has been met. It should be specific enough to support design and verification without prematurely dictating every engineering solution.<\/p>\n<p>This guide explains how factories and OEM\/ODM buyers can prepare, review, approve, and maintain a PRD for new machine development. It covers market context, users, functions, performance, mechanical and electrical needs, software, handles, consumables, production, quality, service, documentation, variants, traceability, and change control.<\/p>\n<h2>Zusammenfassung<\/h2>\n<p>A useful beauty device PRD should:<\/p>\n<ol>\n<li><strong>Start with the product problem and target user.<\/strong> The document should explain the buyer, professional setting, intended service role, and evidence behind the concept.<\/li>\n<li><strong>Separate needs from solutions.<\/strong> A requirement describes the outcome or constraint; engineering determines the best design unless a specific solution is genuinely required.<\/li>\n<li><strong>Make every important statement testable.<\/strong> Replace words such as powerful, premium, easy, and stable with measurable conditions and acceptance criteria.<\/li>\n<li><strong>Cover the complete product system.<\/strong> The machine includes software, handles, applicators, accessories, consumables, labels, manuals, packaging, service parts, and production controls.<\/li>\n<li><strong>Identify source, owner, priority, and verification method.<\/strong> These attributes make requirements traceable and help teams resolve conflicts.<\/li>\n<li><strong>Control configurations and market differences.<\/strong> Standard, optional, regional, and buyer-specific requirements should not be mixed into one undefined product.<\/li>\n<li><strong>Use cross-functional review.<\/strong> Product, engineering, quality, sourcing, production, service, documentation, and qualified market specialists should review the requirements they must deliver or approve.<\/li>\n<li><strong>Maintain the PRD after approval.<\/strong> Requirement changes need impact analysis, version control, approval, and updates to design, testing, manufacturing, commercial data, and support.<\/li>\n<\/ol>\n<p>The PRD is not a marketing brochure or a list of ideas. It is the controlled agreement connecting the approved concept to design outputs and acceptance evidence.<\/p>\n<h2>1. What Is a Beauty Device Product Requirement Document?<\/h2>\n<p>A PRD is the approved set of product-level requirements for a new machine or major product revision. It defines the intended product outcome and the conditions the final system must satisfy.<\/p>\n<p>It commonly covers:<\/p>\n<ul>\n<li>business and market context;<\/li>\n<li>intended users and use environment;<\/li>\n<li>product role and scope;<\/li>\n<li>functions and operating modes;<\/li>\n<li>performance;<\/li>\n<li>workflow and usability;<\/li>\n<li>mechanical and industrial-design constraints;<\/li>\n<li>electrical, power, cooling, vacuum, fluid, or energy requirements;<\/li>\n<li>software and interface behavior;<\/li>\n<li>handles, applicators, accessories, and consumables;<\/li>\n<li>safety, risk, and market-specific requirements;<\/li>\n<li>reliability and maintenance;<\/li>\n<li>manufacturing, inspection, and testing;<\/li>\n<li>packaging and shipping;<\/li>\n<li>training, documentation, service, and spare parts;<\/li>\n<li>configurations and variants; and<\/li>\n<li>acceptance and verification.<\/li>\n<\/ul>\n<p>The PRD should be controlled by version and approval status so every department works from the same baseline.<\/p>\n<h2>2. What a PRD Is Not<\/h2>\n<p>Several documents support product development but serve different purposes.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Document<\/th>\n<th>Hauptzweck<\/th>\n<th>Difference from the PRD<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Market or opportunity brief<\/td>\n<td>Explains the market problem and why the project may matter<\/td>\n<td>Earlier and less detailed than approved product requirements<\/td>\n<\/tr>\n<tr>\n<td>Product roadmap<\/td>\n<td>Prioritizes outcomes and investment over time<\/td>\n<td>Does not define the complete acceptance baseline for one product<\/td>\n<\/tr>\n<tr>\n<td>PRD<\/td>\n<td>States what the product must achieve and how success will be accepted<\/td>\n<td>Source for design and verification work<\/td>\n<\/tr>\n<tr>\n<td>Engineering specification<\/td>\n<td>Defines detailed technical implementation and limits<\/td>\n<td>Describes how the approved requirements will be realized<\/td>\n<\/tr>\n<tr>\n<td>Bill of materials<\/td>\n<td>Lists released components and assemblies<\/td>\n<td>Does not explain user, function, or acceptance rationale<\/td>\n<\/tr>\n<tr>\n<td>Test plan<\/td>\n<td>Defines test setup, method, samples, and results<\/td>\n<td>Verifies selected PRD or engineering requirements<\/td>\n<\/tr>\n<tr>\n<td>Benutzerhandbuch<\/td>\n<td>Instructs operators after product release<\/td>\n<td>Is an output of the approved product and documentation requirements<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Combining every document into one file can make ownership unclear. They should remain linked through identifiers and traceability.<\/p>\n<h2>3. When Should the Factory Create the PRD?<\/h2>\n<p>The PRD begins after the opportunity and product concept are sufficiently clear to justify structured development. Early versions can contain open questions, but detailed design should not proceed against conflicting or invisible assumptions.<\/p>\n<p>Eine praktische Abfolge ist:<\/p>\n<ol>\n<li>Capture market and buyer evidence.<\/li>\n<li>Approve the concept for feasibility.<\/li>\n<li>Draft product requirements and alternatives.<\/li>\n<li>Review technical, quality, production, supply, service, and market implications.<\/li>\n<li>Resolve or explicitly record critical unknowns.<\/li>\n<li>Approve a baseline for detailed design.<\/li>\n<li>Control later changes through revision.<\/li>\n<\/ol>\n<p>The PRD can mature through the project, but the team should know which version controls each design and verification decision.<\/p>\n<h2>4. Who Owns the PRD?<\/h2>\n<p>Product management normally owns the complete PRD because it connects market evidence and product outcomes. Ownership does not mean one person writes every requirement.<\/p>\n<ul>\n<li>Market and distributor teams provide buyer and regional evidence.<\/li>\n<li>Engineering defines technical feasibility and identifies missing constraints.<\/li>\n<li>Quality helps establish verifiable requirements, risk controls, and release evidence.<\/li>\n<li>Sourcing reviews components, suppliers, and lifecycle constraints.<\/li>\n<li>Production engineering reviews assembly, testability, tooling, and process needs.<\/li>\n<li>Service reviews diagnostics, maintenance, spare parts, and installed-base needs.<\/li>\n<li>Documentation and training teams review languages, labels, manuals, and operator material.<\/li>\n<li>Qualified specialists review applicable regulatory, professional, and market requirements.<\/li>\n<li>Authorized leadership approves scope, resources, and major tradeoffs.<\/li>\n<\/ul>\n<p>Every requirement should still have one named owner responsible for its clarity and resolution.<\/p>\n<h2>5. Create the Document-Control Header<\/h2>\n<p>The PRD header should identify:<\/p>\n<ul>\n<li>project and proposed product name;<\/li>\n<li>project code;<\/li>\n<li>product category;<\/li>\n<li>document identifier;<\/li>\n<li>version and status;<\/li>\n<li>owner;<\/li>\n<li>contributors and reviewers;<\/li>\n<li>approval authority;<\/li>\n<li>creation and effective dates;<\/li>\n<li>related concept, risk, design, and test records;<\/li>\n<li>confidentiality or distribution rules; and<\/li>\n<li>change history.<\/li>\n<\/ul>\n<p>Draft, approved, superseded, and obsolete versions should be distinguishable. Sending an uncontrolled copy through email should not create a parallel baseline.<\/p>\n<h2>6. Write the Product Context<\/h2>\n<p>The context section explains why the machine should exist. Include:<\/p>\n<ul>\n<li>target buyer and business type;<\/li>\n<li>intended professional environment;<\/li>\n<li>client concern or service application;<\/li>\n<li>problem with current products or workflows;<\/li>\n<li>evidence from inquiries, quotations, orders, demonstrations, service, or market research;<\/li>\n<li>alternatives buyers currently use;<\/li>\n<li>product portfolio role;<\/li>\n<li>target regions and channels; and<\/li>\n<li>business assumptions requiring validation.<\/li>\n<\/ul>\n<p>This section gives engineering and quality teams the rationale behind the detailed requirements.<\/p>\n<h2>7. Define Intended Users and Operating Environment<\/h2>\n<p>The product may interact with several users:<\/p>\n<ul>\n<li>business owner or buyer;<\/li>\n<li>consultant;<\/li>\n<li>trained operator;<\/li>\n<li>technician;<\/li>\n<li>distributor trainer;<\/li>\n<li>service engineer;<\/li>\n<li>warehouse or logistics staff; and<\/li>\n<li>end client receiving the service.<\/li>\n<\/ul>\n<p>Describe relevant environments such as treatment room, available floor or bench space, power supply, temperature, humidity, ventilation, water or drainage where applicable, storage, cleaning, transport, and expected operating frequency.<\/p>\n<p>User and environment requirements should reflect the intended market and receive qualified review where professional conditions or local rules apply.<\/p>\n<h2>8. State the Product Problem and Desired Outcome<\/h2>\n<p>A strong problem statement identifies:<\/p>\n<ul>\n<li>who has the problem;<\/li>\n<li>what they are trying to do;<\/li>\n<li>what prevents success today;<\/li>\n<li>why the issue matters;<\/li>\n<li>which evidence supports it; and<\/li>\n<li>what outcome would show improvement.<\/li>\n<\/ul>\n<p>For example, \u201cadd more handles\u201d is a requested solution. A better problem statement may explain that a defined salon segment needs one compact platform to deliver three service roles without excessive room, storage, changeover, and training burden.<\/p>\n<h2>9. Define Scope and Exclusions<\/h2>\n<p>The PRD should state what the project includes and excludes.<\/p>\n<p>Scope may include:<\/p>\n<ul>\n<li>target model and format;<\/li>\n<li>core functions;<\/li>\n<li>approved handles;<\/li>\n<li>software and languages;<\/li>\n<li>regional versions;<\/li>\n<li>accessories and starter consumables;<\/li>\n<li>packaging and manuals; and<\/li>\n<li>service deliverables.<\/li>\n<\/ul>\n<p>Exclusions may include future optional modules, unsupported treatment applications, unapproved markets, buyer-specific customizations, or functions assigned to another model.<\/p>\n<p>Exclusions prevent expectations from expanding silently during development.<\/p>\n<h2>10. Define the Product Role within the Portfolio<\/h2>\n<p>State whether the new machine is intended as:<\/p>\n<ul>\n<li>entry model;<\/li>\n<li>core model;<\/li>\n<li>professional or high-throughput model;<\/li>\n<li>compact version;<\/li>\n<li>regional product;<\/li>\n<li>advanced clinic product;<\/li>\n<li>multifunction platform;<\/li>\n<li>replacement for an existing model; or<\/li>\n<li>controlled OEM\/ODM product.<\/li>\n<\/ul>\n<p>Also identify products the buyer may compare with it and explain the intended difference. This reduces product-line overlap and helps the team avoid adding functions that do not fit the model&#8217;s role.<\/p>\n<h2>11. Write Requirements in a Consistent Form<\/h2>\n<p>A clear requirement usually follows this pattern:<\/p>\n<p><strong>The product or named subsystem shall perform a defined action or meet a defined condition within measurable limits and stated circumstances.<\/strong><\/p>\n<p>Examples of useful structure:<\/p>\n<ul>\n<li>The device shall display the selected operating mode and connected handle before activation.<\/li>\n<li>The accessory tray shall retain every standard handle during normal product movement under the defined test condition.<\/li>\n<li>The system shall identify the approved software version in the service interface.<\/li>\n<li>The final package shall contain every item listed in the approved configuration record.<\/li>\n<\/ul>\n<p>The exact values and conditions must come from engineering, product, quality, and applicable market evidence rather than generic examples.<\/p>\n<h2>12. Give Every Requirement the Necessary Attributes<\/h2>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Attribute<\/th>\n<th>Zweck<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Requirement ID<\/td>\n<td>Creates a stable reference for design and test records<\/td>\n<\/tr>\n<tr>\n<td>Statement<\/td>\n<td>Defines the required outcome or constraint<\/td>\n<\/tr>\n<tr>\n<td>Source<\/td>\n<td>Identifies market, user, quality, technical, or market basis<\/td>\n<\/tr>\n<tr>\n<td>Rationale<\/td>\n<td>Explains why the requirement matters<\/td>\n<\/tr>\n<tr>\n<td>Owner<\/td>\n<td>Names the person responsible for clarification and approval<\/td>\n<\/tr>\n<tr>\n<td>Priorit\u00e4t<\/td>\n<td>Separates required scope from lower-priority preference<\/td>\n<\/tr>\n<tr>\n<td>Acceptance criteria<\/td>\n<td>States what result constitutes compliance<\/td>\n<\/tr>\n<tr>\n<td>Verification method<\/td>\n<td>Inspection, test, analysis, demonstration, or review<\/td>\n<\/tr>\n<tr>\n<td>Affected configuration<\/td>\n<td>Identifies model, variant, handle, software, or market applicability<\/td>\n<\/tr>\n<tr>\n<td>Dependencies<\/td>\n<td>Links related requirements, modules, suppliers, or documents<\/td>\n<\/tr>\n<tr>\n<td>Status<\/td>\n<td>Draft, approved, changed, verified, deferred, or rejected<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>These fields make the PRD usable as a controlled development tool rather than a narrative brief.<\/p>\n<h2>13. Use Priority Labels Carefully<\/h2>\n<p>Priority can be classified as:<\/p>\n<ul>\n<li>mandatory for the approved product scope;<\/li>\n<li>required for a named market or configuration;<\/li>\n<li>important for buyer value;<\/li>\n<li>desirable if feasibility and resources permit;<\/li>\n<li>future roadmap item; or<\/li>\n<li>explicitly excluded.<\/li>\n<\/ul>\n<p>Avoid calling every request \u201cmust have.\u201d Priority should reflect buyer evidence, risk, product role, and approval\u2014not the seniority of the person who suggested it.<\/p>\n<h2>14. Define Functional Requirements<\/h2>\n<p>Functional requirements describe what the product must do. They may cover:<\/p>\n<ul>\n<li>operating modes;<\/li>\n<li>treatment or service functions;<\/li>\n<li>handle or applicator detection;<\/li>\n<li>parameter selection;<\/li>\n<li>startup and shutdown;<\/li>\n<li>status indication;<\/li>\n<li>alarms and fault response;<\/li>\n<li>cooling, vacuum, fluid, RF, ultrasound, laser, or mechanical behavior as applicable;<\/li>\n<li>maintenance functions;<\/li>\n<li>language selection;<\/li>\n<li>data and service access; and<\/li>\n<li>permitted and prohibited combinations.<\/li>\n<\/ul>\n<p>Functions should be allocated to the correct hardware, software, handle, and user workflow.<\/p>\n<h2>15. Define Performance Requirements<\/h2>\n<p>Performance requirements need values, units, tolerances, conditions, and acceptance methods. They may address:<\/p>\n<ul>\n<li>energy or output range;<\/li>\n<li>frequency or wavelength where relevant;<\/li>\n<li>spot size or treatment-head identity;<\/li>\n<li>vacuum or pressure;<\/li>\n<li>temperature and cooling behavior;<\/li>\n<li>flow;<\/li>\n<li>speed or repetition;<\/li>\n<li>accuracy and stability;<\/li>\n<li>startup time;<\/li>\n<li>continuous or intermittent operating conditions;<\/li>\n<li>noise;<\/li>\n<li>electrical input; and<\/li>\n<li>environmental limits.<\/li>\n<\/ul>\n<p>Public competitor specifications are not automatically valid requirements. The values should connect to the intended product and qualified technical analysis.<\/p>\n<h2>16. Define Workflow and Usability Requirements<\/h2>\n<p>The PRD can describe:<\/p>\n<ul>\n<li>setup sequence;<\/li>\n<li>operator login or access where applicable;<\/li>\n<li>mode and handle selection;<\/li>\n<li>parameter visibility;<\/li>\n<li>language and terminology;<\/li>\n<li>status and warning presentation;<\/li>\n<li>cable and handle organization;<\/li>\n<li>accessory access;<\/li>\n<li>client changeover;<\/li>\n<li>cleaning and routine checks;<\/li>\n<li>maintenance prompts;<\/li>\n<li>error recovery; and<\/li>\n<li>service access.<\/li>\n<\/ul>\n<p>Terms such as intuitive or easy should be replaced by observable user tasks and acceptance criteria.<\/p>\n<h2>17. Define Industrial and Mechanical Requirements<\/h2>\n<p>Mechanical requirements may include:<\/p>\n<ul>\n<li>desktop, vertical, cart, or portable format;<\/li>\n<li>dimensions and weight limits;<\/li>\n<li>housing materials and finish;<\/li>\n<li>stability and mobility;<\/li>\n<li>screen position;<\/li>\n<li>internal mounting;<\/li>\n<li>ventilation openings;<\/li>\n<li>cable routing;<\/li>\n<li>connector placement;<\/li>\n<li>handle and accessory storage;<\/li>\n<li>service access;<\/li>\n<li>fasteners and assembly constraints;<\/li>\n<li>cleaning surfaces; and<\/li>\n<li>packaging protection.<\/li>\n<\/ul>\n<p>Der <a href=\"https:\/\/shefmon.com\/oem-odm\/\">SHEFMON OEM\/ODM page<\/a> describes exterior and mechanical design, internal wiring, airflow, moisture protection, handpiece connections, structural work, and prototyping. These are examples of design areas that can be driven by clear product requirements.<\/p>\n<h2>18. Define Electrical, Power, Cooling, Vacuum, and Fluid Requirements<\/h2>\n<p>The appropriate technical sections depend on the category.<\/p>\n<p>Possible requirements include:<\/p>\n<ul>\n<li>input voltage and frequency;<\/li>\n<li>power architecture;<\/li>\n<li>protection and grounding;<\/li>\n<li>cable and connector rules;<\/li>\n<li>internal power distribution;<\/li>\n<li>cooling capacity and monitoring;<\/li>\n<li>airflow path;<\/li>\n<li>pumps, valves, tubing, bottles, and seals;<\/li>\n<li>vacuum or pressure range;<\/li>\n<li>leakage and drainage controls;<\/li>\n<li>sensor inputs; and<\/li>\n<li>behavior during faults or interrupted operation.<\/li>\n<\/ul>\n<p>Requirements should specify interfaces and acceptance conditions without forcing an unverified component choice too early.<\/p>\n<h2>19. Define Software and User-Interface Requirements<\/h2>\n<p>The PRD should address:<\/p>\n<ul>\n<li>software identifier and version logic;<\/li>\n<li>compatible hardware;<\/li>\n<li>boot and shutdown behavior;<\/li>\n<li>screen flow;<\/li>\n<li>operating modes;<\/li>\n<li>parameter units, ranges, and defaults;<\/li>\n<li>user access levels;<\/li>\n<li>handle or cartridge recognition;<\/li>\n<li>alarms, warnings, and error codes;<\/li>\n<li>languages;<\/li>\n<li>diagnostic and service functions;<\/li>\n<li>update method;<\/li>\n<li>production loading and confirmation; and<\/li>\n<li>records or data where applicable.<\/li>\n<\/ul>\n<p>Screenshots can illustrate intent, but they do not replace behavior and acceptance requirements.<\/p>\n<h2>20. Define Handles, Applicators, Accessories, and Consumables<\/h2>\n<p>For every item, state:<\/p>\n<ul>\n<li>identifier;<\/li>\n<li>standard, optional, or market-specific status;<\/li>\n<li>compatible model and version;<\/li>\n<li>mechanical and electrical interface;<\/li>\n<li>operating limits;<\/li>\n<li>recognition method;<\/li>\n<li>calibration or pairing if applicable;<\/li>\n<li>cleaning, storage, or disposal information;<\/li>\n<li>packaging;<\/li>\n<li>inspection and test;<\/li>\n<li>replacement and reorder path; and<\/li>\n<li>service responsibility.<\/li>\n<\/ul>\n<p>The PRD should define the complete product system rather than treating handles and consumables as a later sales decision.<\/p>\n<h2>21. Define Safety, Risk, and Market Requirements<\/h2>\n<p>The project should involve appropriately qualified specialists to identify requirements based on intended use, technology, professional setting, claims, and destination market.<\/p>\n<p>The PRD may need to address:<\/p>\n<ul>\n<li>foreseeable use and misuse;<\/li>\n<li>operator access and authorization;<\/li>\n<li>electrical, thermal, optical, mechanical, vacuum, fluid, software, or other hazards as applicable;<\/li>\n<li>alarms and interlocks;<\/li>\n<li>labels and warnings;<\/li>\n<li>contraindication and consultation information where relevant;<\/li>\n<li>cleaning and maintenance;<\/li>\n<li>packaging and transport;<\/li>\n<li>required evidence; and<\/li>\n<li>country-specific professional and market-access conditions.<\/li>\n<\/ul>\n<p>Do not copy regulatory or safety statements from another device without confirming their applicability.<\/p>\n<h2>22. Define Reliability, Maintainability, and Serviceability<\/h2>\n<p>Requirements may cover:<\/p>\n<ul>\n<li>expected-use profile;<\/li>\n<li>duty cycle;<\/li>\n<li>component and connector life where defined;<\/li>\n<li>error detection;<\/li>\n<li>service diagnostics;<\/li>\n<li>replaceable modules;<\/li>\n<li>maintenance intervals or conditions;<\/li>\n<li>access time;<\/li>\n<li>tools and technician level;<\/li>\n<li>spare-parts availability;<\/li>\n<li>software recovery;<\/li>\n<li>service records; and<\/li>\n<li>post-repair verification.<\/li>\n<\/ul>\n<p>Reliability language should use measurable conditions rather than the single word stable.<\/p>\n<h2>23. Define Manufacturing Requirements<\/h2>\n<p>Manufacturing input belongs in the PRD when it affects product design and acceptance. Examples include:<\/p>\n<ul>\n<li>target assembly approach;<\/li>\n<li>approved production sites or constraints;<\/li>\n<li>modular subassemblies;<\/li>\n<li>mistake-proofed connectors;<\/li>\n<li>access for fastening and inspection;<\/li>\n<li>test points;<\/li>\n<li>software-loading method;<\/li>\n<li>traceability;<\/li>\n<li>serial-number rules;<\/li>\n<li>tools and fixtures;<\/li>\n<li>rework limitations;<\/li>\n<li>line-clearance or configuration controls; and<\/li>\n<li>production records.<\/li>\n<\/ul>\n<p>Designing for repeatable assembly is part of creating a viable machine, not an activity that begins after engineering finishes.<\/p>\n<h2>24. Define Quality and Verification Requirements<\/h2>\n<p>The PRD should identify critical acceptance needs, while detailed test protocols can remain in controlled verification documents.<\/p>\n<p>Quality requirements may address:<\/p>\n<ul>\n<li>incoming component controls;<\/li>\n<li>in-process inspection;<\/li>\n<li>board programming and power checks;<\/li>\n<li>assembly verification;<\/li>\n<li>function checks;<\/li>\n<li>aging or burn-in;<\/li>\n<li>software and language confirmation;<\/li>\n<li>configuration completeness;<\/li>\n<li>packaging inspection;<\/li>\n<li>nonconformance handling;<\/li>\n<li>final release records; and<\/li>\n<li>traceability.<\/li>\n<\/ul>\n<p>SHEFMONs <a href=\"https:\/\/shefmon.com\/quality-control\/\">quality-control page<\/a> describes raw-material testing, circuit-board aging and power tests, precision-parts assembly, functional aging, and prototype inspection. These public process areas illustrate why requirements should connect product design to factory acceptance.<\/p>\n<h2>25. Define Supply-Chain Requirements<\/h2>\n<p>The PRD can state constraints related to:<\/p>\n<ul>\n<li>critical component specifications;<\/li>\n<li>approved supplier strategy;<\/li>\n<li>availability and lead time;<\/li>\n<li>component lifecycle;<\/li>\n<li>inspection and qualification;<\/li>\n<li>storage;<\/li>\n<li>shelf life where applicable;<\/li>\n<li>lot traceability;<\/li>\n<li>substitution approval;<\/li>\n<li>regional sourcing restrictions where verified; and<\/li>\n<li>continuity or second-source expectations.<\/li>\n<\/ul>\n<p>The sourcing team should identify requirements that conflict with realistic supplier capability before the design becomes fixed.<\/p>\n<h2>26. Define Packaging and Logistics Requirements<\/h2>\n<p>Enthalten:<\/p>\n<ul>\n<li>protection for console, screen, handles, and accessories;<\/li>\n<li>package size and weight constraints;<\/li>\n<li>internal organization;<\/li>\n<li>packing list;<\/li>\n<li>carton and label information;<\/li>\n<li>manuals and inserts;<\/li>\n<li>language and market version;<\/li>\n<li>transport and handling conditions;<\/li>\n<li>pallet or shipment requirements;<\/li>\n<li>unpacking workflow;<\/li>\n<li>packaging inspection; and<\/li>\n<li>replacement packaging for service where needed.<\/li>\n<\/ul>\n<p>Packaging requirements should reflect the complete configured product, not an empty console.<\/p>\n<h2>27. Define Documentation and Training Deliverables<\/h2>\n<p>The PRD should identify required:<\/p>\n<ul>\n<li>product specification;<\/li>\n<li>user manual;<\/li>\n<li>setup guide;<\/li>\n<li>maintenance instructions;<\/li>\n<li>cleaning guidance;<\/li>\n<li>training presentation or video where planned;<\/li>\n<li>sales configuration guide;<\/li>\n<li>compatibility table;<\/li>\n<li>spare-parts list;<\/li>\n<li>service manual or troubleshooting guide;<\/li>\n<li>labels and warnings;<\/li>\n<li>packaging documents; and<\/li>\n<li>translations.<\/li>\n<\/ul>\n<p>Each deliverable needs an owner, source baseline, approval, version, and release timing.<\/p>\n<h2>28. Define Service, Spare-Parts, and Consumable Requirements<\/h2>\n<p>Service readiness may require:<\/p>\n<ul>\n<li>fault and diagnostic information;<\/li>\n<li>service access;<\/li>\n<li>replaceable modules;<\/li>\n<li>tools and fixtures;<\/li>\n<li>spare-parts identifiers;<\/li>\n<li>stock and supply period policy;<\/li>\n<li>replacement handles;<\/li>\n<li>consumable ordering information;<\/li>\n<li>remote-support process;<\/li>\n<li>escalation path;<\/li>\n<li>warranty data; and<\/li>\n<li>service history records.<\/li>\n<\/ul>\n<p>These requirements influence design choices and should not wait until after production release.<\/p>\n<h2>29. Control Standard, Optional, Regional, and Custom Scope<\/h2>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Scope type<\/th>\n<th>What the PRD should state<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Standard<\/td>\n<td>Included in every released unit of the defined model<\/td>\n<\/tr>\n<tr>\n<td>Optional<\/td>\n<td>Approved compatible choice with clear selection and verification rules<\/td>\n<\/tr>\n<tr>\n<td>Standard configuration<\/td>\n<td>Repeatable package for a named buyer or service profile<\/td>\n<\/tr>\n<tr>\n<td>Regional variant<\/td>\n<td>Controlled differences in language, electrical, software, label, documentation, or hardware<\/td>\n<\/tr>\n<tr>\n<td>OEM\/ODM project<\/td>\n<td>Buyer-specific differences, deliverables, approvals, ownership, and production limits<\/td>\n<\/tr>\n<tr>\n<td>Future scope<\/td>\n<td>Potential roadmap item explicitly excluded from the current release<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>This separation prevents the project from trying to build every possible version at once.<\/p>\n<h2>30. Build Requirement Traceability<\/h2>\n<p>Traceability connects:<\/p>\n<ol>\n<li>Market, user, quality, technical, or market source.<\/li>\n<li>Product requirement.<\/li>\n<li>Engineering output.<\/li>\n<li>Risk control where applicable.<\/li>\n<li>Verification method and result.<\/li>\n<li>Manufacturing or inspection control.<\/li>\n<li>Released model and configuration.<\/li>\n<\/ol>\n<p>A traceability matrix helps the team find missing tests, unsupported design features, and requirements affected by later changes.<\/p>\n<h2>31. Manage Assumptions and Open Questions<\/h2>\n<p>Aufzeichnen:<\/p>\n<ul>\n<li>assumption or unknown;<\/li>\n<li>reason it matters;<\/li>\n<li>current evidence;<\/li>\n<li>owner;<\/li>\n<li>action needed;<\/li>\n<li>target resolution point;<\/li>\n<li>affected requirements; and<\/li>\n<li>decision if the assumption proves false.<\/li>\n<\/ul>\n<p>Examples include target utilization, preferred handpiece, supplier availability, language demand, cleaning workflow, packaging limit, or regional review. Hidden assumptions become late changes.<\/p>\n<h2>32. Control Requirement Changes<\/h2>\n<p>After baseline approval, a change request should identify:<\/p>\n<ul>\n<li>requested change and reason;<\/li>\n<li>source and evidence;<\/li>\n<li>affected requirements;<\/li>\n<li>design and interface impact;<\/li>\n<li>risk and market impact;<\/li>\n<li>supplier and component effect;<\/li>\n<li>verification and regression testing;<\/li>\n<li>production and inventory effect;<\/li>\n<li>documentation, training, and service updates;<\/li>\n<li>cost and schedule impact; and<\/li>\n<li>approval decision.<\/li>\n<\/ul>\n<p>The updated PRD should retain a history of what changed, why, and when it became effective.<\/p>\n<h2>33. Avoid Combining Several Requirements into One Statement<\/h2>\n<p>One sentence should not require a small housing, silent operation, high power, low cost, easy service, and several functions. These needs can conflict and require different owners and tests.<\/p>\n<p>Split compound statements into atomic requirements. Then identify dependencies and tradeoffs. This makes it possible to approve one item, revise another, and verify each independently.<\/p>\n<h2>34. Avoid Ambiguous Requirement Language<\/h2>\n<p>Replace:<\/p>\n<ul>\n<li>high quality;<\/li>\n<li>user-friendly;<\/li>\n<li>advanced;<\/li>\n<li>fast;<\/li>\n<li>quiet;<\/li>\n<li>portable;<\/li>\n<li>powerful;<\/li>\n<li>long life;<\/li>\n<li>safe for all users; and<\/li>\n<li>compatible with everything.<\/li>\n<\/ul>\n<p>With defined users, conditions, values, dimensions, tasks, interfaces, limits, and acceptance criteria. If a value is not known, mark it as an open item with an owner rather than inventing precision.<\/p>\n<h2>35. A0648 Facial-System PRD Example Areas<\/h2>\n<p>Der <a href=\"https:\/\/shefmon.com\/product\/a0648-9-in-1-diamond-hydro-microdermabrasion-peeling-machine\/\">A0648 9-in-1 Hydro-Mikrodermabrasionssystem<\/a> publicly presents cleansing, exfoliation, extraction, hydration, and related facial roles.<\/p>\n<p>A PRD for a new system in this category could require clear definitions for:<\/p>\n<ul>\n<li>intended salon or clinic profile;<\/li>\n<li>function and handle package;<\/li>\n<li>vacuum and fluid behavior;<\/li>\n<li>bottles, pumps, valves, tubing, and seals;<\/li>\n<li>tips and accessories;<\/li>\n<li>Aufbewahrungsgriffe;<\/li>\n<li>interface workflow;<\/li>\n<li>Reinigung und Umr\u00fcstung;<\/li>\n<li>leak and functional acceptance;<\/li>\n<li>starter consumables; and<\/li>\n<li>packaging completeness.<\/li>\n<\/ul>\n<p>The exact values must come from the approved new-product project, not from the example page.<\/p>\n<h2>36. A0426 Hair-Removal PRD Example Areas<\/h2>\n<p>Der <a href=\"https:\/\/shefmon.com\/product\/a0426-755-1064-810-940nm-diode-laser-hair-removal-beauty-machine\/\">A0426 diode laser hair-removal system<\/a> page lists wavelength options of 755, 810, 940, and 1064 nm, multiple spot sizes, cooling, and language choices.<\/p>\n<p>A new hair-removal machine PRD may need to define:<\/p>\n<ul>\n<li>intended buyer and utilization;<\/li>\n<li>approved wavelength configuration;<\/li>\n<li>handpiece and spot size;<\/li>\n<li>power and cooling requirements;<\/li>\n<li>operating modes and parameter limits;<\/li>\n<li>Schnittstellensprache;<\/li>\n<li>handpiece recognition and replacement;<\/li>\n<li>electrical and thermal acceptance;<\/li>\n<li>protective accessories and documentation;<\/li>\n<li>production test; and<\/li>\n<li>regional professional and market requirements.<\/li>\n<\/ul>\n<p>The PRD should state one approved product scope rather than copying every available market option into the first release.<\/p>\n<h2>37. B0155 Body-System PRD Example Areas<\/h2>\n<p>Der <a href=\"https:\/\/shefmon.com\/product\/b0155-desktop-endos-velapro\/\">B0155 Desktop Endos Velapro<\/a> page lists vacuum roller, RF, rotating massage, and 80K cavitation functions.<\/p>\n<p>A multifunction body-device PRD could cover:<\/p>\n<ul>\n<li>primary service role;<\/li>\n<li>essential and supporting functions;<\/li>\n<li>approved handle set;<\/li>\n<li>power distribution;<\/li>\n<li>connector and cable organization;<\/li>\n<li>software mode selection;<\/li>\n<li>handle recognition;<\/li>\n<li>accessory storage;<\/li>\n<li>Reinigung und Umr\u00fcstung;<\/li>\n<li>separate functional acceptance by mode;<\/li>\n<li>training; and<\/li>\n<li>relationship to specialized body devices.<\/li>\n<\/ul>\n<p>Defining the primary role prevents the new machine from becoming an uncontrolled collection of functions.<\/p>\n<h2>38. A0204 and A0152 Advanced-System PRD Areas<\/h2>\n<p>Der <a href=\"https:\/\/shefmon.com\/product\/a0204-9d-7d-focused-hifu-machine-5-in-1\/\">A0204 9D\/7D fokussiertes HIFU-System<\/a> Und <a href=\"https:\/\/shefmon.com\/product\/a0152-desktop-mmrf-deepth-8-microneedling-rf\/\">A0152 RF-Mikroneedling-System<\/a> illustrate categories where handles, cartridges, tips, consumables, parameter workflow, user preparation, records, and aftercare information can shape the product.<\/p>\n<p>Requirements may need to distinguish:<\/p>\n<ul>\n<li>device and consumable configuration;<\/li>\n<li>identification and compatibility;<\/li>\n<li>approved parameter boundaries;<\/li>\n<li>professional user and training;<\/li>\n<li>consultation and record support;<\/li>\n<li>cleaning, storage, or disposal workflow;<\/li>\n<li>consumable supply;<\/li>\n<li>service and replacement; and<\/li>\n<li>qualified regional requirements.<\/li>\n<\/ul>\n<p>Advanced product requirements should receive review from the specialists responsible for the intended technology and destination market.<\/p>\n<h2>39. Review the PRD through Cross-Functional Gates<\/h2>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Rezension<\/th>\n<th>Hauptfrage<\/th>\n<th>Expected result<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Concept review<\/td>\n<td>Is the product problem and target buyer clear?<\/td>\n<td>Approved concept and PRD drafting scope<\/td>\n<\/tr>\n<tr>\n<td>Requirements review<\/td>\n<td>Are statements complete, consistent, feasible, and verifiable?<\/td>\n<td>Approved or conditionally approved baseline<\/td>\n<\/tr>\n<tr>\n<td>Architecture review<\/td>\n<td>Can the proposed systems satisfy the requirements?<\/td>\n<td>Requirement allocation and identified gaps<\/td>\n<\/tr>\n<tr>\n<td>Design review<\/td>\n<td>Do design outputs address the current baseline?<\/td>\n<td>Actions, decisions, and updated traceability<\/td>\n<\/tr>\n<tr>\n<td>Verification readiness<\/td>\n<td>Are methods, units, conditions, and acceptance criteria ready?<\/td>\n<td>Approved verification plan<\/td>\n<\/tr>\n<tr>\n<td>Release review<\/td>\n<td>Are requirements verified and factory deliverables complete?<\/td>\n<td>Released product baseline or documented blockers<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Open requirements should have owners and closure conditions rather than disappearing from the review minutes.<\/p>\n<h2>40. Use a Practical PRD Section Structure<\/h2>\n<ol>\n<li>Document control.<\/li>\n<li>Product summary and business context.<\/li>\n<li>Intended users and environment.<\/li>\n<li>Problem statement and intended outcome.<\/li>\n<li>Scope, exclusions, and assumptions.<\/li>\n<li>Portfolio role and comparison products.<\/li>\n<li>Functional requirements.<\/li>\n<li>Performance requirements.<\/li>\n<li>Usability and workflow.<\/li>\n<li>Mechanical and industrial design.<\/li>\n<li>Electrical, power, thermal, vacuum, or fluid systems.<\/li>\n<li>Software and interface.<\/li>\n<li>Handles, applicators, accessories, and consumables.<\/li>\n<li>Safety, risk, and market requirements.<\/li>\n<li>Reliability, maintenance, and service.<\/li>\n<li>Manufacturing, quality, and verification.<\/li>\n<li>Supply chain.<\/li>\n<li>Packaging and logistics.<\/li>\n<li>Documentation and training.<\/li>\n<li>Configurations and variants.<\/li>\n<li>Traceability, approvals, and change history.<\/li>\n<\/ol>\n<p>The sections can be adjusted to the product. Removing an irrelevant section is better than filling it with generic text.<\/p>\n<h2>41. Beauty Device PRD Checklist<\/h2>\n<ul class=\"checklist\">\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>The PRD has a document ID, version, owner, status, approvers, and change history.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Target buyers, intended users, professional setting, product problem, and market evidence are clear.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Product role, scope, exclusions, configurations, variants, and future work are separated.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Requirements use stable identifiers and atomic, testable statements.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Source, rationale, owner, priority, acceptance criteria, and verification method are recorded.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Functional, performance, workflow, mechanical, electrical, software, interface, and environmental needs are covered.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Handles, applicators, accessories, consumables, packaging, and documentation are treated as part of the product system.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Risk, professional, and market-specific requirements receive qualified review.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Manufacturing, inspection, aging, traceability, service, spares, and training requirements are included.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Assumptions and unresolved questions have owners and deadlines.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Requirements connect to design outputs, verification evidence, and production controls.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>Changes receive cross-functional impact analysis and approval.<\/li>\n<li class=\"task\"><input disabled=\"disabled\" type=\"checkbox\" \/>The released product, website data, quotation configuration, manual, and service information use the same baseline.<\/li>\n<\/ul>\n<h2>H\u00e4ufig gestellte Fragen<\/h2>\n<h3>1. What is the main purpose of a beauty device PRD?<\/h3>\n<p>It creates an approved, traceable definition of what the new machine must achieve. Engineering designs against it, quality plans acceptance evidence, production prepares the process, and commercial and service teams prepare matching information.<\/p>\n<h3>2. How detailed should a PRD be?<\/h3>\n<p>It should be detailed enough to remove material ambiguity and support design and verification. It should define outcomes, constraints, interfaces, and acceptance without prescribing every engineering solution unless the solution itself is required.<\/p>\n<h3>3. Who should write the product requirements?<\/h3>\n<p>Product management should coordinate the document, while market, engineering, quality, sourcing, production, service, documentation, and qualified specialists contribute and review the requirements they understand and own.<\/p>\n<h3>4. What makes a product requirement testable?<\/h3>\n<p>It identifies the product or subsystem, required behavior, measurable limit or condition, relevant configuration, and acceptance method. A reviewer should be able to determine objectively whether it passed.<\/p>\n<h3>5. Should the PRD include exact components?<\/h3>\n<p>Only when a component or interface is a justified product constraint. Detailed part choices usually belong in engineering outputs and the bill of materials, while the PRD defines the required performance, compatibility, supply, service, or production result.<\/p>\n<h3>6. How should optional handles appear in the PRD?<\/h3>\n<p>List their identifiers, compatible models and versions, interfaces, operating limits, software, verification, packaging, training, replacement, and whether they are standard, optional, regional, or future scope.<\/p>\n<h3>7. Can the PRD change after engineering begins?<\/h3>\n<p>Yes, but approved changes need a recorded reason and impact assessment covering design, risk, supply, verification, production, cost, schedule, documentation, and service. The team should know which PRD version controls each release.<\/p>\n<h3>8. What is the difference between acceptance criteria and a test method?<\/h3>\n<p>Acceptance criteria define the result required for compliance. The test method explains the equipment, setup, sample, steps, conditions, and data used to determine that result.<\/p>\n<h3>9. How should OEM\/ODM buyers contribute to the PRD?<\/h3>\n<p>They should provide buyer profiles, intended market, service role, required functions, configuration, branding, language, packaging, documentation, approval contacts, expected use, and constraints. Technical details should then be resolved with the factory through controlled review.<\/p>\n<h3>10. How can a buyer begin a new machine development discussion with SHEFMON?<\/h3>\n<p>Prepare a concept brief with the target user, market, product category, service problem, required functions, preferred format, handles, consumables, languages, branding, packaging, forecast context, and known requirements. Then <a href=\"https:\/\/shefmon.com\/contact\/\">Kontaktieren Sie SHEFMON<\/a> to review feasibility and the appropriate OEM\/ODM development path.<\/p>\n<h2>Abschluss<\/h2>\n<p>A Product Requirement Document turns a beauty device concept into a controlled development baseline. It aligns the buyer problem, product role, functions, performance, architecture constraints, workflow, configurations, production, quality, documentation, and service before those decisions become scattered across drawings, messages, samples, and quotations.<\/p>\n<p>The strongest PRDs use clear ownership, atomic requirements, measurable acceptance, traceability, and controlled change. They define the complete product system while leaving engineering enough room to select the best verified solution.<\/p>\n<p>Erkunden Sie die <a href=\"https:\/\/shefmon.com\/beauty-machines\/\">SHEFMON Beauty-Ger\u00e4te-Portfolio<\/a>, review <a href=\"https:\/\/shefmon.com\/oem-odm\/\">SHEFMON OEM\/ODM and development capabilities<\/a>, oder <a href=\"https:\/\/shefmon.com\/contact\/\">Kontaktieren Sie SHEFMON<\/a> to discuss requirements for a standard product, controlled customization, or new machine concept.<\/p>","protected":false},"excerpt":{"rendered":"<p>A new beauty device project can begin with an attractive concept, a distributor request, a competitor reference, or a list<\/p>","protected":false},"author":3,"featured_media":18893,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[35],"tags":[],"class_list":["post-18892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aesthetic-equipment"],"_links":{"self":[{"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/posts\/18892","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/comments?post=18892"}],"version-history":[{"count":1,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/posts\/18892\/revisions"}],"predecessor-version":[{"id":18894,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/posts\/18892\/revisions\/18894"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/media\/18893"}],"wp:attachment":[{"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/media?parent=18892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/categories?post=18892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shefmon.com\/de\/wp-json\/wp\/v2\/tags?post=18892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}