The 4K version of Chromecast with Google TV generally costs €69.99 on the net and on the Google site but thanks to a rather nice promotion it is possible to find it right now for only €49.99 on Amazon.fr. This is a very good price for this 4K version.
As a reminder, the Chromecast 4K with Google TV comes with a remote control that allows you to control all of its features remotely. The remote control is even equipped with a microphone to control the device by voice.
The Chromecast 4K with Google TV plugs into the back of a TV via its hdmi socket. When this is done, you can then take advantage of many features such as video streaming or content playback via Youtube, Netflix, Prime Video, MyCanal, Disney+, Molotov, etc.
The HD version that was recently unveiled is also available for 10€ less.