I reserve judgment ...

The handy unit. Well, the famous cup is like the others, neither more nor less: the only way that it takes is to get out araldite and put a good package. Otherwise, we should not kid ourselves, it only takes a few moments and then, farewell.
The magnet placed on the back: great idea. Really. I am using as that.
The speaker: very efficient, despite the small size. I'm impressed.
By cons:
During the pre-order, I called and asked if we would hear me with this machine. It is supposed to be attached to the dashboard, I wondered how a microphone so small could properly capture my voice. The person assured me that it worked, "done for that", etc. Well no, it does not. On the dashboard, impossible. And yet, I drive a modern vehicle, as silent in the passenger than the others, finally, in the standard I guess. Nothing to do. Then I had the idea to place it closer. As I have a utility, there are at roof level a large storage space, PVC. I added a strip of metal end I cut and I had sanded the edges. Two holes, two rivets, the deal was done. Well, it improves a bit, but it's not there yet. According to the interlocutor, I am told that hears me "by far". I am disappointed, especially that I had asked the question and specified that if it did not work, I would refer.
I have one last idea to be tested. I do not speak for now, but I will try. If I can put it into practice, I will say here's how I landed on my feet. For now, negative balance because of this microphone, while also all other points are clearly and resolutely positive. See, then.