?Lithium battery?: With high-speed motor and 3.7V lithium battery. the shaver can be powered by its fast-charging battery or external power supply, so you may use it with or without cord. ?Easy cleaning?: With an integrated honeycomb-shape tank and a detachable blade, the shaver is easy to rinse directly under running water. ?Widened clipper head?: 70mm-wide curved blade increases haircut area per shave by 75% compared with the traditional 40mm-wide blade, making haircutting faster. ?Curved blade?: The ergonomically curved design makes the blade naturally fit the contour of your head, and easy to use. ?Self haircut?: With a short and small body design, the shaver feels comfortable and can easily reach the back of your head, the top of your head and sideburns. The shaver is suitable for you to do a DIY haircut like a buzz cut and a bald head at home.