Model Name: HUAWEI Watch GT Sport Version Display: 1.39'' AMOLED Colorful Screen Resolution: 454 x 454 HD Connection: Bluetooth 4.2, BLE GPS: Yes Sensors: Accelerometer sensor, Gyroscope sensor, Magnetometer sensor, Optical heart rate sensor, Ambient light sensor, Barometer sensor Battery: 14 days for typical use Charge Voltage and Current: 5V 0.5A / 1.5A / 2A System Requirement: Android 4.4 or later; iOS 9.0 or later Charging Port: Megnetic charging thimble Water Resistance: 5 ATM water-resistant