Get a perfect yet protective trim, time after time. The trimmer's steel blades lightly brush against one another, sharpening themselves as they trim so they stay extra sharp and effective as on day 1. Charge your trimmer for 8 hours with your USB cable to get 60 minutes of cordless use. You can choose from 1mm stubble comb or any of the 3mm, 5mm or 7mm beard combs, to get the beard length you want.Alternatively, you can remove the comb and get the zero trim look of 0.5mm. The battery indicators in this trimmer let you know what your battery status is low or charging.