Features: case: 42 mm • display: 1.77", Retina LTPO3 OLED, 446x374 px, touchscreen • features: 64 GB, Wi-Fi 4 (802.11 n), Bluetooth 5.3, NFC, GPS / GALILEO / GLONASS / BDS / QZSS, sensors: altimeter, barometer, accelerometer, gyro, compass, heart rate, SpO2, temperature sensor, accident detection, VO2max