Letsfit Fitness Tracker HR, Color Screen Activity Tracker Watch, Heart Rate Monitor, Sleep Monitor, Step Calorie Counter, IP68 Waterproof Pedometer Watch for Kids Women Men

Some Extras:
Use with “VeryFitPro” App: Use the tracker with “VeryFitPro” app for data reports and more functions.
Remote Camera Shooting: Operation on the tracker screen could remotely control photography shooting of your phone.
Wrist Sense: The screen automatically lights up when you turn your wrist towards you.
Model: ID115Plus Color HR
Bluetooth version: Bluetooth 4.0 or later
Bluetooth transmission distance: 10 Meters (33 feet)
CPU: Nordic nRF52832
Sensor: KIONIX KX022-1020
HR Sensor: silicon labsSill42
Screen size:0.96 inch
Screen type: TFT LCD color screen
Material: upper casing: PC; strap: TPU
Dimension: suits for wrist size: 5.4 inch – 7.6 inch
Battery type: Li Battery
Battery capacity: 65mAh
Working time: 5-10 days
Charging time: 1-2 hours
Weight: 0.87oz (24.8g)