Battery Life With built-in low power consumption BT chip, sensor and mAh rechargeable battery life, it offers IP67 Waterproof Well-sealed body can be worn for hand washing, raining, sweat or other water splashing, easily adapting to various environments. Multi-Language Supported kinds of languages are supported to meet different language users' needs. User-Defined Watch Faces Abundant preset dials meet diverse needs of users. You can switch them freely. Parameters: Screen: 1.8 inch IPS Resolution: 240*286 BT: BLE 5.0 Compatibility: Android 4.4 and above or iOS 9.0 and above Battery Capacity: 320mAh Working Time: 7-10 days Standby Time: 30 days App: Dafit Language: English, simplified Chinese, Japanese, Korean, German, French, Spanish, Arabic, Russian, traditional Chinese, Ukrainian, Italian, Portuguese, Dutch, polish, Swedish, Finnish, Denmark, Norway, Hungary, Czech, Bulgaria, Romania, Slovakia, Latvia, Indonesian, Thai, Turkish, Vietnamese, Hindi Pashto, Lithuanian, Estonian, Slovenian, Croatian, Greek, Filipino, Hebrew, Malay, Serbian, Persian Specifications: Model: C20S Material: Surface Alloy Bottom Plastic Color: Black / Green / Military Green / Military Black (Optional) Water-Resistant Level: Ip67 Dial Size: 5.8 * 4.36 * 1.35 cm / 2.28 * 1.71 * 0.53 inch Dial Thickness: 1.35cm / 0.53 inch Strap Width: 22mm Item Weight: 54.6g Package Size: 15.5 * 8.5 * 2.7cm / Package Weight: 116g Note: * Please read the user manual carefully before use. * There may be 1-3mm error due to manual measurement. * There may be slight difference in color due to shooting angle and light. Please refer to the real object. Package List: 1 * Smart Bracelet 1 * Charging Cable 1 * User Manual