Wahl's Lithium-Ion Combo Kit comes with a cordless rechargeable hair clipper that provides a 2 hour runtime, 15 minute quick charge, and holds a charge for up to 1 year. It also contains self-sharpening no-snag precision blades that stay sharper longer and a heavy duty motor that provides 50% more power than a standard Wahl clipper. This kit also features a battery trimmer that is great for touch-up trims around the ears and neckline. To achieve even cutting lengths simply attach any of the 14 attachment guards to the clipper to get the look that you want.