Features: case: 41 mm • display: 1.69", Retina LTPO OLED, 430x352 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