I have long wondered whether I this, but is not quite afford cheap part. But the teller was worth it !! The hair clipper is really a hammer machine. As different as day and night to the hair trimmer that I previously (all very reasonably priced) have used. Once over the head and about 95% !! the hair is gone. Earlier cutting took about 20 minutes, now I'm done after 5 min. The essays I have not tried it yet. My favorites are the settings with 2 or 1.7mm. The battery performance, I am satisfied. The volume is alright. I would buy the machine again.