The short comb helps you easily maintain short and medium beards (0.5 - 10 mm). Create accurate lines and edges with the Beard trimmer head. Ultra sharp blades easily cut through long or thick hair without pulling and tugging. The Precision dial offers 20 length settings from 0.5 to 10 mm — for any beard or hair style. The German-designed BT3 combines timeless design with flawless function. 50 minutes of trimming. Full recharge in 10 hours.