I cut hair as a hobby.
The machine is Chinese. Do not buy it for any reason, you will just waste your money.
It says in the instructions that it needs about 5 hours for a full charge for 60 minutes of use.
Since I charged it for the first time and the battery ran out, I let it charge and 6 hours passed, which I don't think affected it in any way.
So I start cutting and within 5 minutes from full charge, the battery went to 0 and when I charged it again, it did the same thing.
Also, the side lever is made of plastic and seems to break easily, just like the combs.
I do not recommend it to you