Strokes per minute: 5,500
Sleek, lightweight ergonomically designed cordless clipper. A powerful, professional clipper with 2 quick-release battery packs. Rotary motor gear driven. Features snap on/off cutting head with 5 built-in length adjustments from .1 mm to 3.9 mm. Each battery has a 1-hour charge time and 1-hour run time. Charging stand also stores clipper, brush, and oil.