45MM 
Bluetooth calls
Compatible OSAndroid 5.0, iOS 9.0 or above
Operating ModeFull Touch + Side Key
APP NameM2wear
App LanguageEnglish, French, Arabic, Persian, Spanish, Russian, Vietnamese, Thai, Czech, Turkish, Polish, Portuguese, and Greek.
Watch LanguageEnglish, French, Arabic, Persian, Spanish, Russian, Vietnamese, Thai, Czech, Turkish, Polish, Portuguese, and Greek.
Multi-sport ModesSupport
WaterproofIP67
SensorG-sensor SC7A20, Heart Rate Sensor, Acceleration Sensor.
ScreenSize: 1.75 inch
Display Type: IPS 2.5D
Resolution: 320*385
BatteryBattery Capacity: 195mAh
Standby Time: Up to 7 Days 
Using time: About 2-3 days
Charging Time: About 2 hours
Charging Type: Dock charging
Case and BandThe shape of the dial: Square Shaped
Band Size: 42mm  ( Removable watch strap)
Band Material: Silicone
Case Material: Zinc alloy + Plastic
Weight: about 52g
39.7*44.5*14mm
Other Featuresthe custom watch face, message notifications, alarm, weather, find watch, music controls,5 mini-games, password unlocking.