ANDIS SUPRA ZR II CORDLESS DETACHABLE CLIPPER (#79005)Features: Now with removable battery for fast, easy replacement and no downtime Heavy duty, detachable blade clipper in a cordless design delivers a 3 hour run time on a 2 hour charge. Lithium ion power mated with powerful rotary motor to cut any hair type wet or dry 5 speeds: Adjustable from 1,800 to 3,800 strokes per minute. Ceramic blade runs cooler and stays sharper. Works with all UltraEdge and CeramicEdge blades.