The mainsrechargeable function allows you to clip without the restriction of a cord and can be used on the cord if the charge is running low the lithium ion battery technology means an outstanding 90 minute run time from a 120 minute charge time includes an led light display when the clipper is charging with a convenient thumb lever you are able to adjusts the taper and texture without changing the blades this clipper also uses existing super taper combs for added convenience and is dual v