Home button; band quick release button; aluminum finish 1.82-inch (480 x 408) display AMOLED screen 16 MB of RAM and 256 MB of ROM More than 100 watch faces Monitoring sleep and more than 100 workouts monitors heart rate, steps, daily activity, and more. Bluetooth v5.3 Emergency SOS and fall detection Sensors: Gyrosensor, Optical Heart Rate Sensor, Accelerometer, Barometer, and Light Sensor Real-time alerts with media controls and vibrate IP68 water resistance plus 5ATM RTOS HxWxD measurements: 4.29 cm x 2.88 cm x 0.99 cm 36.8 g in weight 208mAh battery with a 13-day lifespan (65% in 30 minutes) Quick charging