With the rise of wearable devices, children's smart watches have also emerged in the market tide, and are exported to the European Union, the United States and South Korea in large quantities. Now children's smart watches have almost become the "standard equipment" for children, and corresponding quality problems are also coming one after another. , causing children’s smart watches to have a series of safety hazards.
Standard GB/T 41411-2022, this standard will be officially implemented on November 1, 2022. Specifies the requirements, test methods, etc. for children's watches.
1. Reliability of use
2. Vibration resistance
3. Waterproof performance
4. Shockproof performance
5. Corrosion resistance
6. Anti-static performance
7. Chemical properties
8. Covering layer adhesion
9. External force resistance of accessories
10. Resistant to tensile and torsional fatigue
11. Appearance
12. Operating temperature
13. Static positioning
14. Call
15. Electromagnetic radiation
16. Information security
17. Standby time
1.1 Observe the working and display status of the child's watch, press the function button of the child's watch, and check the working status of each function of the child's watch. Children's watches should not stop running under normal conditions of use, and parts, parts, and components should not fall off on their own;
1.2 The digital display of LCD children's quartz watches and hands, and LCD digital children's quartz watches should be normal, and there should be no missing scratches, ghosting, or no display. Each function key should be flexible and reliable. The digital display of children's smart watches should be normal, and each function key should be flexible and reliable.
2.Vibration resistance
Children's watches should not stop after being tested for vibration resistance, and components should not be loose or damaged.In addition, different types of children
Quartz watches should also meet the following corresponding requirements:
-The amount of change in the instantaneous daily difference before and after the test of the liquid crystal quartz watch for children should comply with the relevant regulations:
-The actual running error before and after the test of pointer-type children's quartz watches and pointer and LCD digital children's quartz watches should not exceed 10 seconds;
- The digital display of LCD children's quartz watches and hands, and LCD digital children's quartz watches should be normal.
The waterproof performance of children's watches marked with "waterproof" should comply with the regulations of GB/T30106. The display function shall be normal during and after the test.
4.Shockproof performance
The shock-proof performance of children's watches marked with "shockproof" should comply with the requirements for quartz watches in GB/T38022. Children's watches without the "shockproof" mark should not stop after passing the shockproof performance test, the LCD display should be normal, and parts, components, and components should not become loose, fall off, or be damaged.
5.Corrosion resistance
After children's watches undergo corrosion performance tests, there should be no visually visible corrosion points, corrosion deposits or salt precipitation on the surface of the watch case and its accessories.
6.Anti-static performance
LCD children's quartz watches and hands, LCD digital children's quartz watches and children's smart watches should not stop or reset during and after the anti-static performance test. The display and watch operating parts should function normally after the test.
The content of migratory elements, limited plasticizers, nickel release, and harmful substance limits of leather materials in children's watches that can come into contact with the appearance and parts that come into contact with the human body should all comply with relevant requirements.
8.Covering layer adhesion
On the test area of the case or strap of the children's watch, use a ruler and a hard steel scorer with a sharp edge to score a 2mmx2mm square. Apply enough pressure so that the knife can cut through the covering layer to the base material in one go; after that, use a tape that leaves no residual glue and has an adhesive force of 29N/cm~3.3N/cm to dry the covering layer in the test area and be careful Press out the bubbles. After 10 seconds, quickly tear off the tape with force perpendicular to the surface of the dry covering layer, and use a low-power microscope to inspect the surface of the covering layer and the tape surface.
After the adhesion test of children's watch cases and straps with covering layers, there should be no cracks, bubbling, separation, or falling off on the surface of the covering layer.
9.External force resistance of accessories
Make the strap buckle of the children's watch into a ring shape, apply a static pulling force F of 50N to the strap as shown in the figure below and hold it for more than 5 seconds. After the test, check the accessories of the children's watch. After the children's watch has been tested for the external force resistance of the accessories, there should be no parts falling off or cracking at the connection parts of the watch and the strap.
Attachment resistance to external force performance test chart
10.Resistant to tensile and torsional fatigue
After the children's watch undergoes the tensile and torsion fatigue test, the watch strap should have no cracks or breaks. The elongation of the plastic strap should not be greater than 3%, and the deformation of the strap buckle hole should not be greater than 50%.
11.Appearance
Under the lighting conditions of maintaining the illumination value of not less than 600lx on the inspection work surface, the inspection shall be carried out at a clear visual distance from the inspector.
- The dial surface of children's watches should be clean, the various character patterns should be accurate and clear, and there should be no obvious defects and blemishes.
-The glass, back cover and inlaid decorative parts of children's watches should fit firmly with the watch case, and there should be no obvious gaps or defects in the connection. The watch glass should be smooth and clear.
-The appearance of children's watches should not have obvious pitting, scratches, burrs, sharp edges and other defects that would affect safe wearing and use. Its design shape should not cause harm to the human body.
-Safety warning signs: Pass visual inspection. Children's watches should have Chinese safety warning signs on the instructions, labels and logos or packaging: the safety warning signs should be eye-catching, easy to read, understandable and difficult to erase: the content of the safety warning signs should be similar to the following:
"Warning! Not suitable for children under 3 years old. Contains small parts."
Warnings about specific hazards should be marked on the packaging or instruction manual of the children's watch.
12.Operating temperature
Children's smart watches should work normally within the operating temperature range of -5°~50°.
13.Static positioning
The static positioning performance of children's smart watches in the hot start state should comply with the requirements in the table below. Among them, the effective positioning rate is the number of effective positioning divided by the total number of static positioning tests: the average distance error is the arithmetic mean of the positioning distance error under effective positioning; the average positioning time is the arithmetic mean of the positioning time under effective positioning.
14 calls
Children's smart watches with call functions should have a telecommunications equipment network access permit and a radio transmitting equipment model approval permit.
15Electromagnetic radiation
The local exposure limit of electromagnetic radiation from children's smart watches should comply with the requirements in the table below.
Local exposure limits to electromagnetic radiation
16.Information security
16.1 Upgrade function
-Should support updates and upgrades to children's smartwatch operating systems.
-At least one security mechanism should be used, and encrypted transmission should be used to ensure security during the upgrade process.
16.2 Identity Authentication
Children's smart watches should have the following identity authentication functions:
- The identity of the user should be identified and authenticated. The identity should be unique and there should be no duplicate user identities: - The user's authentication credentials should be securely protected to prevent the leakage and tampering of the authentication credentials;
- Functions such as login failure processing and timeout security processing should be provided, and measures such as locking the user account or ending the session after continuous login failures, and automatically logging out when the user session connection times out;
- When a mobile application or management platform uses a password to log in, the user should be forced to change the initial password when logging in for the first time, and the complexity of the password should be checked;
- When user identification information is lost or invalid, identification information reset or other technical measures should be used to ensure system security.
16.3 Access control
Children's smartwatches should have the following access control features:
- Access control functions should be provided. Assign accounts and permissions to logged-in users:
- Different users should be granted the minimum permissions required to complete their respective tasks, and a mutually restrictive relationship should be formed between them.
16.4 Data security
Children's smartwatches should have the following data security features:
-The data validity check function should be provided to ensure that the content input through the human-machine interface or the communication interface meets the system setting requirements;
- Cryptographic technology should be used to ensure the integrity and confidentiality of important data during transmission and storage, including but not limited to identification data, important business data and sensitive personal information.
16.5 Protection of personal information
Children's smart watches should have the following personal information protection requirements:
-The purpose, method, scope and other rules for collecting and using personal information should be clearly stated;
- Personal information should be collected, stored and used with the user's consent. For sensitive personal information, the user's express consent should be obtained;
-Only personal information necessary for business shall be collected, stored and used;
-Unauthorized access and use of personal information should be prohibited;
-Users' rights to correct, delete personal information, and cancel their accounts should be protected.
16.6 Battery safety
The performance of lithium batteries used in children's smart watches should comply with the regulations of GB31241.
16.7 Safe charging
Children's smart watches should be designed so that they cannot be used while charging, and the charger should comply with the relevant regulations of GB49431.
16.8 Wear safe temperature
The surface temperature limits of external contactable parts of children's smart watches should comply with the provisions of Table A3.
Surface temperature limits of externally accessible parts
17.Standby time
Children's smart watches should meet their advertised standby time.
Post time: Mar-14-2024