Compatible with: Apple iOS 13 or higher, Android OS 8.0 or higher Based on heart rate, duration of sleep and movements as well as the time in deep sleep and REM phases, a sleep index is created that allows you to understand the quality of your sleep The continuous heart rate measurement helps you to optimally adapt your training intensity and enables a more precise recording of your calorie consumption. In the Fitbit app, you can track the development of your resting heart rate and cardio fitness Control your Spotify app and add Deezer playlists, plus play songs on your wrist; subscriptions required Calls, messenger messages, SMS, app notifications and calendar events are shown on the display of the smartwatch when your smartphone is nearby. So you are always up to date – and can even reply to messages directly from your wrist with a connected Android smartphone Some links on this page are links to the amazon.co.uk shopping site and as such are paid links. As an Amazon Associate we earn from qualifying purchases.
