Model Number Smart watch KM18 Function BT call, answer calls, contacts, custom watch faces, SMS reminders, exercise records (step counting, calories, etc), sleep monitoring, sedentary reminders, calorie counting, stopwatch, raising your hand to brighten the screen, dynamic heart rate, blood pressure and blood oxygen measuring, breath training, multiple sports mode, remote photography, music control, smart alarm, weather forecast, etc Display 1.39inch, full touch, 360*360 Chip RTL8763EWE BT version BLE5.2 Battery capacity 300mAh Working life About 4-5 days Waterproof level IP67(daily life) Material Zinc alloy case + silicone strap APP FitCloudPro Compatible system For IOS 9.0 and Android 4.4, or above Charge method Magnetic charging Watch languages Chinese, Traditional Chinese, English, Spanish, Portuguese, German, Italian, French, Russian, Japanese, Polish, Vietnamese, Korean, Arabic, Hebrew, Thai, Croatian, Turkish, Czech, Dutch, Indian, Malay, Finnish, Greek, Hindi, Persian APP languages English, Simplified Chinese, Traditional Chinese, German, French, Arabic, Czech, Greek, Spanish, Japanese, Persian, Italian, Korean, Dutch, Polish, Portuguese, Russian, Finnish, Swedish, Thai, Hungarian, Slovak, Croatian, Albanian, Turkish, Ukrainian, Hindi