Despite pfleglichen handling and rare and minimal use (1 - 2 times a week to trim sideburns, is located on a private space in the drawer) half of the front teeth on the attachment without external influence (apart from the use) are terminated by itself and the device is now slowly useless for me. Suddenly found after the intended use not only hair but also once again one point from the trimmer attachment in the sink! Very annoying! Since this problem apparently occurs in very many customers - see more reviews on the product - here you can probably expect a manufacturer error or extremely poor quality of the trimmer attachment. Thus, the unit of time is really only useful as long as you do not need the paper.