Dimensions：16.6mm（width）*10.7mm（thickness）,
139~195mm（internal circumference）
Materials： Surface shell： PC resin,
Wrist band： Soft TPU
Display：OLED，0.91 inches，128*32 px
Sensor： Three-axis accelerometer sensor
Vibration motor： Supported
Bluetooth：Bluetooth4.0 BLE
Battery：55mAh
Time display： RTC + time synchronization
Charging method: USB charger
Weight: Approximately 20g
Waterproof classification： Day-to-day utilization
Waterproof functionality
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