The Remington MB4120 Beard Boss trimmer comes equipped with CaptureTrim serrated blades for a more effective and cleaner cut. You can choose from eleven pre-set length settings ranging from 1.5mm to 18mm. The trimmer also features 0.4mm and 1mm length settings without the use of the comb. It is operated with two AAA batteries (included in the package). The Remington MB4120 Beard Boss is the perfect choice for modern men who take care of their appearance and leave nothing to chance.