About this item Swiss Military Dom 2 comes with a 1,39" HD display using the high-response touch-sensitive screen, side button and fully rotatable crown, offset for easy access. Rotate the crown for easy scrolling through on-display features and volume settings You can use Bluetooth calling during workouts and in your daily life. Including: running, cycling, driving or doing housework. Swiss Military Dom 2 will also help you to pay attention to your physical condition and Health management with the help of 10 workout moods, Blood oxygen monitoring, Heart rate monitoring and Blood Pressure Monitoring. Dom 2 is packed with advance features including customizable alerts and lockable screen, Do Not Disturb modes, stopwatch, smartphone notifications, alarms, weather forecasts and more. Operating System: Android 5.0 or later | iOS 8.0 or later. This smartwatch will help in Sleep tracking so you can plan your bedtime and track your sleep stages.