The Andis Super AGR+ is a powerful, cordless detachable blade clipper designed for all day heavy duty use. Equipped with a 4 x 4 blade drive for 25% more blade torque, this unit runs at 3,800 strokes per minute. The clipper has a high capacity battery pack that runs continuously for one hour. The battery recharges in the Sensa-Charge charging system in less than one hour. The refresh mode recharges and conditions the battery to maximum performance overnight.