Andiord OS: Supports Android 4.4 and above
IOS : iOS 8.0 and above
Heart Rate Sensor: Zhanheng BD1662_I2C
Bluetooth: Bluetooth 5.0+ Bluetooth Audio 3.0
Waterproof Level: IP68 Screen
size:1.39-inch full round
Screen Resolution: 454*454
Screen type: IPS full view color screen
Battery Type: Lithium Battery
Battery capacity: 280mAh
Material: Zinc alloy+Silica gel
Charging method: Wireless charge Charging time: About 3h

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