›PROFESSIONAL: Highly efficient and durable Lithium-Ion battery without memory effect. 90 minutes run time and 120 minutes charging time. Rigid drive system ensures more consistent hair cutting. ›ERGONOMIC: Lighter weight and cordless design for easier handling with the great haircutting quality of a Wahl® corded clipper. ›CHROME BLADE: Chrome-plated precision blade set. Convenient thumb lever adjusts the taper and texture without changing blades 1 – 3.5 mm.