Black & Decker LSW120 20-Volt Lithium-Ion Cordless Sweeper Efficient design easily clears debris from hard surfaces like patios, decks, walks, drives and garages Powered by 20-volt MAX lithium-ion battery, with longer lifespan and charge retention than NiCad batteries Achieve air speeds up to 120 MPH; weighs just 3.8 pounds Low noise design, operates at a 66 dBA noise level 2-year limited warranty; includes battery and Energy Star-qualified charger