The Looj 330 is the third generation of iRobot's gutter cleaning devices, and we were immediately impressed by its ability to sense, clean and blast away all the usual debris you may find in rain gutters. Spinning at 500 RPM, this powerful little device can clean a 30-foot section in less than five minutes, and approximately 200 feet on a single charge. The iRobot Looj 330 is designed to do the dirty work, so you don't have to. Here's a quick video we shot of the Looj 330 robot cleaning your gutters: