Material & Finish Bezel: Black titanium / Silver titanium Case: Black stainless steel / Silver stainless steel Cover Glass: Sapphire crystal Size & Weight Dimensions: 46.6 x 47.6 x 11.75 mm (excluding lugs & sensors) Wrist Fit: 140-210 mm Weight: 49.7g (without strap), 81g (with strap) Battery Life Power Saver Mode: Up to 16 days Smart Mode: Up to 5 days (3 days heavy use) Display Size: 1.50" LTPO AMOLED Resolution: 466 x 466 Brightness: Up to 2200 nits Chip & Memory Processor: Snapdragon W5 + BES2800BP MCU Storage: 32GB OS: Wear OS by Google + RTOS Sensors Wrist temperature Optical heart rate & SpO2 Geomagnetic, Light, Barometer Accelerometer, Gyroscope Health Features Vascular health (arterial stiffness) Sleep monitoring with snoring risk 24/7 heart rate & SpO2 tracking OHealth app, Google Health Connect, Strava 60-sec Health Check-In Workouts 100+ modes, 11 pro sports (e.g., skiing, running, tennis, swimming, cycling, rowing) Connectivity Dual-band GPS (L1+L5), Beidou, Galileo, GLONASS, QZSS WiFi 5G/2.4G, Bluetooth 5.2, NFC, Bluetooth calling Durability MIL-STD-810H (16 tests: extreme temp, rain, dust, salt spray, impact, etc.) IP68 + 5ATM water resistance Mobile Payment Google Wallet In the Box Watch body x1 Strap x1 Charging base x1 USB-C cable x1 User manual x1 Model Number: OPWWE251
