Overview
Size: 39*14.8*10.5mm
Material: TPU
Length of band: 140-195 mm
Package size: 121*81*41mm
Weight: item weight of 8g, package weight of 132g
Hardware
CPU: nRF51822V4.0BLE
Screen size: 0.48-inch OLED (64x48)
Sensor: G sensor
Heart rate tracker: static and dynamic state heart rate, 95% accuracy
Battery: lithium polymer battery of 45mAh
Vibrator: reminder
Charge: 5V USB port
Waterproof level: IP56
Standby time: normally use for a week, standby time of 12 days
System
Compatibility: Android and iOS
Supports: Android 4.3 and up iOS 7.0 and up
Bluetooth: 4.0
Data sync: sync stats wirelessly and automatically to your phone
Data keeping: 7 days
Languages: Chinese and English

Main functions:
Time date week, recording sleep time, battery indicator, information setting, account binding, unit conversion, activity tracker (step counts, distance measuring, calorie consumption), sleep tracker, fitness goal setting

Incoming call alert, anti-lost, smart alarm, task reminding, waking you for sitting for too long

Tracking dynamic state of heart rate, incoming call alert by vibrating Android shows number