Features: 1.83-inch touch screen, IP68 waterproof performance 240*280 resolution, high-definition large screen display, picture details clear and vivid, Bt call (APP once connection) Rich applications (voice assistant, weather, calculator, calendar, stopwatch, women's health alerts), etc By accurately recording steps, miles and calories, you can sync data from your phone as well as view historical data. Support continuous measurement of heart rate, blood pressure and blood oxygen, always pay attention to health indicators, measurement results directly displayed on the watch. The bracelet syncs with your phone. The bracelet will remind you not to miss important messages when your phone has a call, message or notification on wechat. The sleep monitor feature automatically identifies your night's sleep and then confirms and improves your sleep habits through the sleep analysis feature. Specification: Chip :BK32886 Screen size :1.83 inches Screen resolution :240*280 BT version :V5.0 Waterproof class :IP68 Battery capacity :250mAh System compatibility :Android 5.1 or later, iOS 8.2 or later, BT 4.0 support Default language (English)：English, Chinese, Spanish, Portuguese, German, French, Russian, Italian, Thai, Dutch, Czech, Turkish, Malaysian, Slovak, Polish, Japanese Packing list: 1*Watch 1*Charging cable 1 * User manual