1.43 inches AMOLED color screen 466 × 466 pixels, PPI 326 Stainless steel Accelerometer sensor Gyroscope sensor Magnetometer sensor Optical heart rate sensor Barometer sensor Temperature sensor Ambient light sensor Home Button (Rotating Crown) and Side Button Wireless charging Android 9.0 or later iOS 13.0 or later 5 ATM IP69K Bluetooth 2.4 GHz, supports BT5.2 and BR BLE  Download