This new feature allows you to control the Deezer app installed on your iPhone using a paired Apple Watch.
This article explains the steps necessary to setup Deezer with your Apple Watch:
- Setup your Apple Watch to work with your iPhone - https://support.apple.com/HT204505
- Download the latest version of the Deezer iOS App
- Use the Apple Watch app on your iPhone to enable the Deezer app for use with your watch
- Under My Watch, Select the Deezer app
- Select Show App on Apple Watch to install the Deezer app on the paired Apple Watch