Special forces can leave no trace and make no sound, but Samsung ‘s Tango Stealth vacuum does them one better: not only is it quiet but it picks up the traces others have left. It’s the latest in a long line of robo-vacs from the company and it’s the quietest, making just 50db of noise while dutifully looking for targets of opportunity on your hardwood. It’ll start shipping in Korea soon at a price of 750,000 Won — about $670. Special faces do cost more than normal ones. Samsung’s Tango Stealth robo-vacuum is a quiet intruder originally appeared on Engadget on Wed, 16 Feb 2011 20:01:00 EDT. Please see our terms for use of feeds . Permalink