iRobot Roomba 550 / 551 AeroVac Technology Vacuum Cleaning Robot

Covers up to 4 rooms on a single battery charge.
Cleans the whole floor, under and around furniture, into corners and along wall edges. Detects dirtier areas and spends more time cleaning
Faster counter-rotating brushes with improved design pick up more hair, debris and dust and are easy to remove and clean
Improved anti-tangle technology keeps Roomba from getting stuck on cords, carpet fringe and tassels
Counter rotating Bristle Brush and Beater Brush work together like a dustpan and broom With its enhanced design, including improved navigation, coverage, pickup, and filtration, this vacuum-cleaning robot makes it easier then ever to clean floors throughout the house--hands free. Simply press the "clean" button and the unit will vacuum the whole floor on its own, adjusting automatically to any floor surface including wood, tile, linoleum, rugs, and carpet. The vacuum's More »