Wahl 5 Star Series 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. High-quality lithium-ion battery with 70 minutes run-time per charge and its ergonomic design fits comfortably in hand for easy maneuverability.