Features: Heart rate monitor 3.04 cm (1.2\") full-screen color AMOLED touch display with ambient light sensor Clock faces can be personalised Pre-installed workouts Activity tracking including calories, distance, steps and duration of activities Sleep monitoring Alarm function Integrated flashlight Notifications of SMS, e-mail, calendar and various social media platforms when connected to the smartphone app Battery life up to 7 days Memory for up to 500 songs (playback via Bluetooth headphones) Compatible with Android and iOS11 Some features are not available on iOS devices.