Charging time: 2-3 hours

Use time: 7-15 days

Waterproof grade: IP67 waterproof

Chip: HS6621

Compatible system: Android5.0 or above IOS9.0 or above

FLASH memory: 128MB

Screen size: 2.01-inch HD screen

Resolution: 240*296

Control mode:Full touch OGS 

Bluetooth:BT5.0

Charging method:Wireless charging

BATTERY CAPACITY:3.7V/230mAh (with protective plate) 

APP software :Wearfit pro

Functions: True Snap, Zhanheng 1662 True Heart Rate, Sleep Monitoring, Fitness Classes, Indoor Sports (Indoor Running, Indoor Cycling, Sit-ups, Push-ups, Free Exercise), Outdoor Sports (Outdoor Running, Outdoor Cycling, Hiking, Mountain Climbing, Other Sports), Data, Altitude Barometer, Blood Pressure, Mettle, Pressure, Messaging Alerts (WeChat, QQ,SMS, WHATSAPP, FACEBOOK,Tittwer, etc.), stopwatch, Bluetooth call, alarm clock, weather, timer, games (who is weak, goalkeeper), app center (temperature, weather, me and him, respiratory rate, blood glucose management), shake to take a picture, Bluetooth music, AI voice assistant (double-tap the screen to wake up), settings (lift wrist to light up the screen, bedside clock, resting dials, constant time, resting time, language settings), time setting, brightness adjustment, time setting, brightness adjustment, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting, time setting. Settings (Wrist lift, bedside clock, rest dial, constant time, rest time, language setting, time setting, brightness adjustment, call setting, sound & vibration, side key setting, do not disturb mode, health reminder, power saving mode, password, connect phone, about, shutdown, reboot, restore factory), calculator, multi-menu style