Review (1/5): Broke in a month; dual blade system is gimmicky
This buzzer broke within a month of receiving it. I heard a rattling noise within the unit, and eventually the top of the enclosure covering the motor and battery simply broke off. I think that for self hair cutting, the dual blade system is more gimmicky than useful. You don't get an effective cut going with the grain, so cutting against the grain and then dragging back down does nothing for the average user.