•Main control chip: Tailingwei 8251
•Gravity sensor: SC7A20/2*2/LGA12
•Heart rate sensor: LC10A
•Bluetooth version: BLE 5.0
•Ram+Rom+Flash: 512KB+64KB+32MbScreen size: 1.1 MOLED
•Screen resolution: 126*294
•Battery capacity: 90mAh
•Working time: 7-10days
•Standby time: 30days
•Data storage: 7days
•Compatible systems: Android 4.4 and above, iOS 9.0 and above