The first hair clipper specifically designed for self-use: Patented 180 degree rotating head. Rechargeable 8 hour charge for up to 60 mins use. 10 length settings 0 to 21mm (grades 0 to 7). Contour following comb follows the shape of your head for a precise and even cut. Self sharpening stainless steel blades. Ergonomic design. Rubber grip. Precision trimmer. Extra strong motor. Corded or cordless use. Manufacturer's 2 year guarantee.