Parameter Screen: 1.69 inch Screen resolution: 240*280 resolution. Battery Capatcity: 200mAh Battery life: 3~7days Waterproof level: IP67 Waterproof APP: "Da Fit" Suitable for mobile phones with Andr more→oid 4.4 or higher, or iOS 9.0 or higher. Screen diagonal:1.69 inch Waterproof Rating: IP67 Heart Rate: Yes Pedometer: Yes Calorie Counter: Yes Compatibility: Android 4.4, IOS 9.0 Language App language support: English, Arabic, Danish, German, Spanish, Finnish, French, Italian, Japanese, Korean, Dutch, Norwegian, polish, Portuguese, Russian, Swedish, Thai, Ukrainian, Chinese and traditional Chinese Watch language support: English, French, Spanish, German, Chinese, traditional Chinese,