BLACK+DECKER LSW321 20V MAX Lithium POWERCOMMAND Power Boost Sweeper 130 MPH sweeper easily clears debris from hard surfaces Low noise design allows for quiet operation Up to 25 minutes of runtime allows you to complete a variety of tasks POWERBOOST increases power to clear stubborn debris 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