System Requirements: Android system 4.4 version or above; iOS system 8.0 version or above.
Bluetooth Version: BLE 4.0
Master Chip: NRF52832
RAM: 64K(Flash 512K)
Screen Display: 0.95 inch OLED
Battery Capacity: 80mAh
Standby Time: About 15days
Operating Hours: 5-7days
Motor: Built in, vibratng reminder
Waterproof Level: IP67 professional Waterproof, can wear to swim.
Sensor: G-sensor.