Review (5/5): It works
Edit: Customer service for this company is five stars! They will contact you and try to fix your problem! Unfortunately Amazon didn't let me return the item (since the refund was issued instead of a replacement). Unfortunately I would have to keep the defective clipper because of COVID and not buy another one ( saving money :/). But I think I can make it work. I was thinking instead of grabbing the clipper from the handle, I would grab it from where it locks. Or maybe taping it. I think I would figure it out. And my son will grow, so at one point he won't be moving as much. But at the end the clippers still work.
The head doesn't stay lock. So if my son moves his head just a little, he can unlock it and the head moves, leaving his hair looking funny. The vibrations are the same as a regular one in my opinion.