•Main control chip: AB5681
•Gravity sensor: Minghao DA267
•PPG chip: TYHX3602
•Screen size: 1.81 inches Super Retina 240*284 full touch screen
•Screen type: IPS
•Bluetooth: 5.3BLE (low power consumption)
•Waterproof level: IP68
•Compatible systems: Android 5.0 and above, iOS 10.0 and above
•Battery type: High-density polymer lithium battery
•Battery capacity: 250 mAh
•Charging method: magnetic charging
•Battery life: 4-7 days of use, 30+ days of standby