View on LOZ Suggested Retail: $87. BLACK+DECKER 20V MAX Cordless Sweeper with Power Boost (LSW321). 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.. 7 CALENDAR DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.