The hair trimmer is completely handy to carry and can be charged anywhere with the Type-C USB cable. Come with a built-in rechargeable battery, a full charging time of 4 hours to offer around 500 minutes of running time. By use of the 3 cutting guides provided, you can adjust the length of the trim up to a maximum of 4.5mm (with the guide comb inserted). The length of the cut is shown on the guide comb.