The and is pulse ZR II 5-Speed detachable blade clipper now comes with a removable battery for quick and easy replacement! Improved run-time of 3-hours on a single charge. Lithium-ion power mated with powerful rotary motor to cut any hair type. 5 speeds: adjustable from 2, 500 to 4, 500 strokes per minute. Equipped with a size #10 ceramic Edge blade. Runs cooler and stays sharper than steel. Works with all Ultra edge ceramic Edge and show edge blades.