Remanufactured iRobot Roomba Vacuum Cleaning Robot with Scheduler, Case/Color May Vary Case and color may vary based on manufacturer's choosing. All units (including units with Discovery cases) include Scheduler technology. Robotic, battery-powered floor vacuum and remote scheduling device Remote scheduler sets and changes vacuuming times and zones On-board artificial intelligence navigate between walls and furniture legs and self-adjusts for carpet, tile, and wood floors. Remanufactured to "like-new" condition; may contain minor cosmetic blemishes. 90 day manufacturer's warranty.