I managed to shave my head once with 5-6 days of hair growth. That is, I gave it a hard time. It took everything off with a few passes and very deeply. Of course, it caused some irritation that I didn't have with a similar well-known Chinese machine. But since I put it to charge and then the machine doesn't turn on and the battery has a problem.
Fortunately, I will continue to shave with the Chinese one, which, although its head has worn out, continues to work fine!

The worst of all is that the service is provided by Damkalidis, whom I hope you never have to deal with. I've been calling all day today and they have them turned off.