Bluetooth 4.0 connectivity, stable signals and low power consumption HD color screen of 1.14 inches, with IP68 water resistance level, sweat-proof and durable for use Health monitoring: heart rate monitoring, step counting, exercise management, remote photography, call reminder, message notification, Find My Phone, sleep monitoring, weather monitoring, blood pressure monitoring, QQ Facebook and other information reminders and displays With built-in 180mAh battery, standby time up to 30 days Widely compatible with Android 4.4 or above and iOS 8.0 or above smartphones APP Support Language: Chinese, Traditional Chinese, English, Arabic, Czech, German, Spanish, French, Indian, Hindi, Italian, Japanese, Korean, Portuguese, Russian, and Turkish Specification: Wrist strap length: 22mm/0.87in Body size: 50 x 40 x 15.4mm/1.97 x 1.57 x 0.61in Product weight: 50.5g Strap material: TPU Bluetooth version: 4.0 Screen size: 1.14inch Resolution: 135 x 240 Battery capacity: 180mAh