Nutikell EX18 (must)

Compatibility: Android 4.3, iOS 7.0 and above APP: xwatch Bluetooth: 4.0 Standby: Up to 1 year in sync mode Water resistant to 5 ATM: Withstands pressure equivalent to 50 meters. (rain, splashing, accidental diving, shower, surface swimming, shallow diving) Functions: phone call and SMS reminder, backlight, remote control, pedometer, calorie counter, etc.