The upgraded 5 Star Cordless Senior is a one of a kind clipper with its precision fade blades, metal bottom housing and cord/cordless capabilities. Its powerful rotary motor results in consistent power to tackle thick hair. The 2191 blades are adjustable with zero-overlap capabilities. The 5 Star Cordless Senior upgrade offers a high quality lithium-ion battery with 80 minute run time per charge and its ergonomic design fits comfortably in hand for easy maneuverability. The new charging cord also fits the Cordless Detailer.