Features: 1.3 inch bright color screen that provides incredible color depth, and exceptional clarity.Give you the best viewing experience wherever you go, and whatever you do. 24/7 continuous heart rate monitoring to ensure high efficiency and low power consumption, combined with accurate algorithmsto effectively filter noise interference. Sleep tracking and stages,see how long you\'re in light, deep and REM sleep and get personalized insights to learn how to get better rest. Receive notificationsfor incoming calls, messages and other apps. All-day activity tracking,track steps, distance, active minutes and calories burned. Make your watch ownmore functions and provide more visual datawith the new open platform of H Band app. Support Android 4.4 and above, iOS 8.0 and above, BT 4.0 version. IP67 water resistant: Daily water resistance (not for showering and swimming). 180mAh battery offers a longer battery life so that makes your work and life more convenient. Parameters: Screen Size: 1.3inch Screen Type: IPS color display Resolution: 240*240 pixel BT: BT 4.0 Sensor: Heart-rate sensor, Proximity sensor, Accelerometer Heart Rate: GREENCELL Heart Rate Algorithm Alert Type: Vibration Operation System: Android, iOS Compatibility: with iOS 8.0 / Android 4.4 and above Battery: Lithium polymer battery Battery Capacity: 180mAh Standby Time: 168 hours Charging Time: About 1.5 hours APP: H Band APP Language: English, Portugus(Brasil), Portugus(Portuguesa), русский, Espaol, Italiano, Franais, Deutsch, Tiếng Việt, 한국어, 日本語, Arabic Functions: 24/7 Heart Rate, Blood Pressure, Steps Calories, Countdown, Female Health, Call Rejection, Exercise Tracking, Real-time Pace Distance, Smartphone Notifications, Sleep Tracking, Stopwatch, Findphone, Alarm Clock, Multi-Watch Faces