Display: 1.74" AMOLED display* Resolution: 480 x 336 pixels Screen Brightness: Up to 2000 nits peak brightness and 1500 nits HBM* Refresh Rate: 60Hz* Water resistance rating: 5ATM Frame: High-strength aluminum Strap Material: TPU Cover Material: 2.5D curved glass Battery Capacity: 350mAh Light mode use: Up to 21 days Sensors: Heart rate sensor | Accelerometer | Gyroscope | Electronic compass | Ambient light sensor