Features: [Exquisite Workmanship] 1.28-inch HD colorful display with 240*240 pixel, creates more vivid picture details and broader view. 2.5D tempered glass screen makes it smooth and durable to use. [Health Monitor] Automatically monitor and record your heart rate, blood pressure, blood oxygen and sleep data with sensitive sensor, helping you adjust yourself for a healthier lifestyle. [Fitness Activity Tracker] KW77 supports 8 sports modes. And it can accurately record your all-day sports data, including step, distance and calories. [User-Defined Watch Faces] Up to 120 dials are available for downloading. You can also customize your exclusive dial with one click. [Smart Reminder] After connected to the phone, it will provide synchronous display of message, call or social APP to remind you of important information. [IP67 Waterproof] Professional sealed structure design reaches IP67 waterproof, allowing you to wear it freely for daily water splashing. [Multi-Language Supported] 13 kinds of languages are supported to meet different language users' needs. [More functions] Music Control, Remote camera, Weather, Breath training, Game, Find phone, Alarm clock, Stopwatch, Countdown, Sedentary reminder, Do not disturb, Flashlight, etc. Parameters: Screen: 1.28-inch Full-Touch Screen Resolution: 240 * 240 BT: 5.0 Compatibility: Android 4.4 above or iOS 9.0 above Battery Capacity: 200mAh Working Time: 3-7 days Standby Time: 10-15 days App: Da Fit Language: English (default), Chinese, Traditional Chinese, German, Korean, Spanish, Japanese, French, Russian, Arabic, Ukrainian, Italian, Portuguese