It uses 114 WS2812B LEDs. The brightness can be reduced by hand or automatically triggered to the surrounding light. It came up with additional Bluetooth module and can be controlled via Smartphone (own iOS and Android app). The kit is available here: https://www.du-kannst-mitspielen.de/p/bausatz-303-universal-version-2-3
Details
The firmware supports up to two different front covers. It can be fully controlled using a normal Smartphone and the special App.