First review 09/06/2021
They have a pretty nice sound, maybe a bit too much bass... their main problem is that as soon as you open the lid, they activate! Which means that if something happens to the lid or the switch on the hinge, then you'll have an issue!!

Update 23/6/2021
The headphones were literally used less than ten times, as I only use them under specific conditions at work, and suddenly one of them completely stopped working! Every time I needed to talk to someone, I had to shout like crazy because they couldn't hear me! I've had several headphones in my hands, and these were not the best. I give them 3 stars because the sound, the 10 times I listened to music, was decent.

Update 11/08/2021

Initially, I discovered that even though I had removed the sticker from the contacts, it seems that there were a few residues left on the contacts. As soon as I cleaned it with a little alcohol, it immediately started charging!
Lastly, it has a shorter range than what I have tried! Overall, it's a good purchase if you don't have many demands