1. Bluetooth version: 4.2
2. Matching system: Android 4.4 and above iOS 9.0 and above
3. Battery capacity: 178mAh polymer lithium battery
4. Body material: metal + plastic
5. Charging interface: magnetic suction pin charging port
6. Applicable wrist size: leather strap: 13-19cm / silicone strap: 14-21cm
7. Water resistance up to 50 meters can be used for water activities in shallow waters such as swimming pools or seaside swimming not suitable for snorkeling hot showers hot springs saunas (steam rooms) diving diving water skiing facing high speed water Other wading and deepwater activities
8. Function: Message reminder blood oxygen detection sleep monitoring heart rate detection exercise mode call reminder information reminder etc.
9. Size: 42.8x42.8x9.8mm
10. Weight: about 32.5g