This beard trimmer uses Dura Power technology to reduce friction on the blades, preserve the motor, and keep your battery going four times longer. The self-sharpening steel blades on the Philips 3000 beard trimmer stay as sharp and effective. 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. The battery indicators in this trimmer let you know what your battery status is: low or charging. Detach the head of your Philips beard trimmer and rinse it under the tap for easy cleaning. Then dry it before you put it back on the appliance.All of our grooming products are built to last. They come with a 2 year warranty, never need to be oiled and are compatible with any voltage worldwide.