This trimmer is designed to be charged with a USB cable. It fully charges in 8 hours and runs for up to 60 minutes. The stainless steel blades are self-sharpening, giving you a trim as effective as on day 1. 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. Charge your trimmer for 8 hours with your USB cable to get 60 minutes of cordless use. This beard trimmer comes with a USB cable for more flexible charging via your computer or any USB adaptor. The adaptor is NOT included. You can choose from the 1-mm stubble comb or any of the 3-mm, 5-mm or 7-mm beard combs to get the beard length you want. Alternatively, you can remove the comb and get the zero trim look of 0.5 mm. The battery indicators in this trimmer let you know what your battery status is: low or charging. This way, you can charge your trimmer on time and you won't end up with an empty battery in the middle of your trim. Blades have rounded tips for smooth contact with skin to prevent scratching and irritation. The travel lock on the on/off button prevents the appliance from being switched on by accident. Detach the head and use the brush included to sweep away loose hairs for easy dry cleaning. No oiling required. Easy to hold and use. Designed to help you trim those hard-to-reach areas. Set includes: - Beard and Stubble Trimmer - 1 x Stubble Comb (1mm) - 3 x Beard Combs (3mm, 5mm and 7mm) - Travel Pouch - Cleaning Brush