Don't let dirt run your schedule...run its schedule with the iRobot Roomba 500 Series with On-Board Scheduling. Clean when it's convenient for you with the on-board scheduling system that allows Roomba to clean once a day up to 7 times per week. Roomba intelligently cleans under and around furniture, along walls and in corners. The included Virtual Wall Lighthouses keep Roomba cleaning in a single room and guide it to the next when finished. You also get 6 replacement filters which trap fine particles and help maximize the effectiveness of your Roomba. iRobot Roomba 500 Series Features: On-board scheduling system - Roomba leaves its home base at the time you schedule, cleans and returns to recharge; easy to use with clearly marked buttons on the scheduling interface Virtual Wall Lighthouses - restrict the Roomba from off-limits areas Offers the latest technology and up-to-date innovations - more efficient, more coverage and better cleaning performance Works on wood floors, carpet, tile, vinyl and linoleum Determines when to use its 4 cleaning behaviors: spiraling, wall following, room crossing and dirt detection - helps decide appropriate cleaning method for conditions Spiraling - cleans a concentrated area Wall following - uses this technique to clean the full perimeter of the room and navigate around furniture and obstacles Room crossing - criss-crosses the room to ensure full cleaning coverage Dirt detection - senses dirt and lights up the Dirt Detect light, cleaning more intensely in that area 3-stage cleaning system Side brushes sweep wall edges and work their way into corners 2 counter-rotating brushes work like a broom and dustpan to scoop up dirt, hair and debris Picks up remaining fine particles while the filter traps dust and other small particles; cleans rugs and carpets to remove dirt, dust and pet hair 2 cleaning modes - tailor cleaning job to suit your needs Clean mode - cleans entire room Spot mode - for a more intense clean in a localized area Self-adjusting cleaning heads - automatically adjust from carpets to hard floors Charging drive-on home base - Roomba returns to home base at the end of each cleaning cycle or when its battery is running low Rechargeable battery - lasts for hundreds of cleaning cycles Cliff-sensing technology - Roomba automatically avoids stairs and other ledges Anti-tangle system - prevents Roomba from getting stuck on power cords, carpet and rug tassels and fringes Convenient bagless bin empties easily Features a voice demonstration demo Measures approx. 13" in diameter x 3-1/2"H Weighs approx. 10 lbs. Model #: 550 Power Source: Roomba - Non-rechargeable battery (installed); charging base station - AC adapter; Virtual Wall Lighthouses - 4 C batteries; all included UL listed Made in China Comes with a manufacturer's 1-year limited warranty Accessories Included: 2 Virtual Wall Lighthouses Charging home base Brush-cleaning tool 6 replacement filters Rechargeable battery AC adapter 4 C batteries User's manual Quick Start guide Addendum to manual Safety instructions