From Alexa to Alexa-Ja👍🏼

Are there any differences between the 3rd generation?
I have seen a video where pressing the button switches off the microphone and also deactivates the camera. It doesn't do that on mine, nor does the motion function work.

No, unfortunately this is not possible - you need an Apple device for this.
However, video calling is possible within the Amazon Alexa app from an iPhone/Android/...

Yes, man can really cool the part