Features: case: 42.7 mm, aluminium/plastic, 27 g • display: 1.75", OLED, 450x390 px, touchscreen • features: 4 GB, Bluetooth 5.0, Wi-Fi 4 (802.11 n), GPS / BeiDou / GALILEO / GLONASS / QZSS, sensors: accelerometer, gyro, compass, light sensor, heart rate, barometer