DISPLAY Type Super AMOLED Size 1.5 inches Resolution 480 x 480 pixels (~453 ppi density) Protection Sapphire Crystal Always-on display Sapphire crystal front, stainless steel frame SIM eSIM MIL-STD-810H and ECG Certified 50m water resistant (IP68) Blood pressure monitor PLATFORM OS Android Wear OS 4, One UI Watch 5 Chipset Exynos W930 (5 nm) CPU Dual-core 1.4 GHz Cortex-A55 GPU Mali-G68 Internal 16GB 2GB RAM SOUND Loudspeaker Yes COMMS WLAN Wi-Fi 802.11 a/b/g/n, dual-band Bluetooth 5.3, A2DP, LE Positioning GPS, GLONASS, GALILEO, BDS NFC Yes FEATURES Sensors Accelerometer, proximity, gyro, compass, heart rate, barometer, thermometer (skin temperature) BATTERY Type Li-Ion 425 mAh, non-removable Charging 10W wireless (Qi) Compatible with standard 20mm straps