Main part : 42*22*12.5mm
Strap: 65*17mm
communication mode: Bluetooth 4.0 with BLE
MCU: EFM32(32-bit ARM Cotex-M3)
Bluetooth: 4.0 Nordic51822
Pedometer: 3D G-sensor
Resting Heart rate: Measurement Range: 30bpm-250bpm; Accuracy: ±2bpm
Smart vibration: vibration wake-up function, motor life≥200000
Battery type: Lithum polymer
Battery capacity: 3.7V 85mAh
OLED Screen: 0.91" OLED, blue color, support TIME, PEDOMETER, FIND MY PHONE, HEART RATE
Call reminder: Need smart phone App setting
OTA upgrade: OTA upgrade for MCU and Bluetooth
port: USB port
Operating time: 3~4days
Strap material: TPSIV
Strap color: black
Waterproof grade: IP67
Compatible model: iOS 7.0 and above, Android 4.3 and above