BLACK+DECKER LSW321 20V MAX Cordless POWERBOOST Sweeper, 130 MPHWhen leaves and grass clippings start to pile up, this sweeper with POWERBOOST clears even stubborn debris from driveways, sidewalks, decks and all your hard surfaces. With up to 25 minutes of runtime, this quiet sweeper gets it all done. POWERBOOST increases power to clear stubborn debris. Up to 130 MPH sweeping easily clears debris from hard surfaces like driveways, decks, and garages. Up to 25 minutes of runtime allows you to complete a variety of tasks. Lightweight design of just 3.7 lbs. Premium microtexture soft grip provides comfort and control. Low noise design allows for quiet operation. Part of the 20V MAX* System - 1 System. Endless Tasks. Power for your Style™. Part of the POWERCOMMAND™ Family of tools – EASYFEED™, POWERCUT™, POWERBOOST - helps solve common user frustrations when using Outdoor Power Equipment. *Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18.