Samsung Galaxy Watch 4 Classic Colour: Black Screen Size: 1.4″ Display Type: Super AMOLED Display Resolution: 450 x 450 Pedometer: Yes Heart Rate Monitor: Yes Sleep Tracker: Yes GPS: Yes Sensors: Accelerometer, Barometer, Gyro Sensor, Geomagnetic Sensor, Light Sensor, Optical Heart Rate Sensor, Electrical Heart Sensor, Bioelectrical Impedance Analysis Sensor Water Resistant: IP68 Compatibility: Android 6.0 Devices or Higher Wi-Fi: Yes Bluetooth: Yes Cellular: Yes Operating System: Android Memory: 16GB Battery Life: Up to 40 Hours Built-In Microphone: Yes Weight (g): 0.52 Family: Galaxy Watch 4 Classic Additional Features: Wireless Charging, Speaker, Measures: BP, ECG, Blood Oxygen, BMI, BMR. Fall Detection, Stress & Wellbeing Tracking, Running Coach & Metrics What’s In The Box: Galaxy Watch 4 Classic, Charging Cord