A Complete Guide to CE Certification for Smart Wristbands

1. What Is a Smart Sports Wristband?

A smart sports wristband is a wearable smart device designed primarily to record the user's exercise and physiological data, and to synchronize that data to a smartphone or other terminal via Bluetooth or a wired connection, helping users understand their health and fitness status.

Smart sports wristbands typically offer a range of functions, including step counting, heart rate monitoring, sleep monitoring, and notification alerts, providing users with comprehensive health management services. Because they incorporate a built-in lithium battery and wireless communication modules such as Bluetooth, these products fall within the scope of mandatory certification when exported to the European Union.
 

2. Why Is CE Certification Mandatory for Smart Wristbands?

CE certification is the European Union's conformity assessment system covering safety, health, and environmental requirements for products placed on its market. It is a mandatory market access requirement.
 

For smart wristbands, CE certification focuses primarily on radio frequency (RF) performance, electromagnetic compatibility (EMC), electrical safety, human RF exposure, and restriction of hazardous substances, ensuring the product's safety, electromagnetic compatibility, and regulatory compliance when used within the EU.
 

An important note: Because smart wristbands contain a built-in Bluetooth module, they are classified as "radio equipment," and the core applicable legislation is the Radio Equipment Directive (RED) 2014/53/EU.​ This Directive has already integrated the safety requirements (Article 3.1(a)) and EMC requirements (Article 3.1(b)) into its framework. Therefore, the traditional Low Voltage Directive (LVD) and EMC Directive do not apply separately.
 

3. Applicable Directives and Core Standards

Note:​ Standard versions are subject to the latest harmonised standard list published in the Official Journal of the European Union (OJEU). Before submitting samples for testing, confirm that the referenced version is still valid.

4. Main Test Items

1. Radio Frequency (RF) Performance Testing — per EN 300 328

• Equivalent Isotropically Radiated Power (EIRP) test
   
• Frequency range and frequency error test
   
• Occupied bandwidth test
   
• Transmitter spurious emissions test
   
• Receiver blocking test
   
• Adaptive (frequency hopping) capability test
   

2. Electromagnetic Compatibility (EMC) Testing — per EN 301 489-1 / EN 301 489-17

• Electromagnetic interference (EMI): radiated emissions, conducted emissions
   
• Electromagnetic susceptibility (EMS): electrostatic discharge (ESD), radio frequency electromagnetic field immunity, electrical fast transient/burst (EFT), etc.

3. Electrical Safety Testing — per EN 62368-1

• Insulation and dielectric withstand testing
   
• Lithium battery safety assessment (overcharge, over-discharge, short-circuit protection; the battery itself must also comply with
  EN/IEC 62133 and UN 38.3 transport safety testing)
   
• Temperature rise and overheat protection testing
   
• Mechanical strength and construction checks
   
• Marking and instruction checks

4. Human RF Exposure Assessment (EMF / SAR)
 

Wristbands are worn in direct contact with human skin, so the impact of electromagnetic radiation on the human body must be assessed. Low-power devices such as Bluetooth (with transmit power generally ≤ 20 mW) can usually undergo a simplified assessment per EN 62479 and be exempted from SAR testing. If this threshold is exceeded, a full RF exposure assessment is required, with the SAR limit not exceeding 2 W/kg.
 

5. Cybersecurity Assessment (mandatory since 1 August 2025)
 

Smart wristbands are wearable radio devices that process personal data such as heart rate, blood oxygen, sleep, and location, and therefore fall within the scope of Delegated Regulation (EU) 2022/30. They must meet the EN 18031 series requirements, including:

• Verification of resistance to network attacks
   
• Secure communication protocols (e.g., TLS 1.3 or above)
   
• Secure firmware update mechanism
   
• No default passwords, plus user data protection and privacy disclosure
   

6. Hazardous Substances Testing (RoHS) — per EN IEC 63000
 

Testing for restricted substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), and phthalates.

5. Compliance Route: Self-Declaration or Notified Body?

The RED provides several conformity assessment procedures, and companies may choose based on their actual situation:
 

Route 1: Module A — Internal Production Control (Self-Declaration, the mainstream option)
 

The company commissions a qualified laboratory to complete the full set of tests and obtain a formal test report, compiles the complete Technical Construction File (TCF), signs the EU Declaration of Conformity (DoC) as the manufacturer, and affixes the CE marking to the product. If the product fully applies the harmonised standards published by the EU, the vast majority of ordinary Bluetooth wristbands can follow this route, with no Notified Body (NB) certificate required.
 

Route 2: Notified Body (NB) Involvement
 

If the product does not fully apply the harmonised standards, or applies sections of the standards that have not been harmonised, a EU Notified Body must be involved to review the product and issue an NB certificate.

Key reminder:​ Module compliance ≠ whole-product compliance. An existing RED report for the Bluetooth module cannot directly replace the report for the finished product. Antenna gain, housing structure, and power supply circuitry can all alter RF emission characteristics, so the complete device still requires full testing.

6. Documents Required for CE Certification

1. English user manual (must include complete warnings and safety information)
    
2. Circuit schematic diagram
    
3. PCB layout (trace routing) diagram
    
4. PCB component placement (silkscreen) diagram
    
5. English BOM (Bill of Materials, listing battery and wireless module models and their certification information)
    
6. Functional block diagram
    
7. English description of operating principle
    
8. Antenna specification (if applicable)
    
9. Application form
    
10. Test mode software / test-mode sample (if applicable)
     
11. Company information (name, address, contact person, title, telephone, fax, email, etc.) with handwritten signature
     
12. Samples: typically 2–3 mass-production finished samples + 1 engineering sample​ (the engineering sample must have test mode enabled)

7. Certification Process

Step 1: Requirement Assessment
 

Confirm the product functions and wireless specifications (Bluetooth version; whether GPS / NFC / Wi-Fi is included), and determine the applicable directives and test standards.
 

Step 2: Document and Sample Preparation
 

Submit the technical documents and samples according to the checklist.
 

Step 3: Laboratory Testing
 

A qualified laboratory completes the full set of tests, including RF, EMC, safety, EMF, cybersecurity, and RoHS.
 

Step 4: Corrective Action and Retesting (if non-conformities are found)
 

Address common failure items such as excessive spurious emissions or excessive transmit power, then retest.
 

Step 5: Technical File Compilation
 

Compile test reports, circuit diagrams, BOM, user manual, and other materials into a complete Technical Construction File (TCF), which must be retained for at least 10 years.
 

Step 6: Sign the DoC and Affix the CE Marking
 

The manufacturer signs the EU Declaration of Conformity. The CE marking must be at least 5 mm​ in height and affixed visibly, legibly, and indelibly to the product or its packaging.
 

Step 7: Designate an EU Authorised Representative
 

Non-EU manufacturers must designate an economic operator established within the EU as the responsible person, and complete the required labelling and online information display (GPSR requirement).
 

8. The Importance of Obtaining CE Certification

Market Access:​ Obtaining CE certification is a necessary condition for smart wristbands to enter the European market legally, and is a prerequisite for smooth customs clearance and listing for sale.
 

Legal Compliance:​ Ensures that the product complies with EU regulations such as RED, RoHS, REACH, and GPSR, avoiding legal risks including delisting, recalls, fines, and even market bans.
 

Consumer Trust:​ The CE marking is a reliable symbol of product safety and quality, helping to strengthen the trust of European consumers and channel partners in the brand, and enhancing the product's market competitiveness.
 

Appendix: Key Corrections Made During Polishing (for reference)

Sources:​ Official European Commission documents, RED Delegated Regulation (EU) 2022/30 and the OJEU listing of the EN 18031 series, the official GPSR (EU) 2023/988 guidance, and the RED harmonised standard list.
 

One Additional Reminder

If your wristband makes medical-grade heart rate or blood oxygen claims​ (for example, claims intended for diagnosis), it may also fall under the EU Medical Device Regulation (MDR) or need to be assessed against the EN 60601 series, which would significantly lengthen the compliance route. It is advisable to confirm the intended functional claims of the product in advance.

Global United Technology Services Co., Ltd. owns Internationally recognized CNAS (L5775) laboratory qualification, US FCC NVLAP qualification, domestic CMA qualification for inspection and testing in, capable of issuing internationally mutually recognized test reports, as well as authorized qualifications from major institutions such as UK's ITS, Germany's TUV, and Belgium's Eurof; focusing on the core testing fields of EMC, electrical safety, wireless RF, and chemical testing certification agency for export compliance, providing a one-stop service of "testing rectification technical training", making us your ideal partner!

Contact Us

Email:vicky.mo@gtstest.com
Whatsapp: +86  18025848511
WeChat:  +86 18025848511