RVC007 Robotic Vacuum Cleaner Automatic Smart Robot With Remote Control Non-Marring Bumper protect your furniture and wall surface. Wall Following Sensor make sure this unit can clean most ground surface along the wall. Automatic Self-charging - Automatically search the charge base to recharge when the power is low. Stair Avoidance Detector assure the unit won't drop from the stairs. The cleaner will escape automatically by itself when it was stuck by the furniture bottom or something else. Self-adjusting cleaning head automatically traverses uneven floor as it cleans carpet, hardwood, linoleum, and tile. Easily slide out the bag-less particle bin to discard the dirt that it picked up. Automatically cleans all floor surfaces - low pile carpets, wood floors, ceramic tiles The vacuum will run for 60 minutes on a full charge. It also must be connected properly to the charging station while it is charging.The vacuum is made to be used on tile, hardwood, laminate, and low pile carpeting (1/2 inch or less). It is not made to climb up on carpet from a hard floor surface.The vacuum must be cleaned after each use. The sensors must not be obstructed by dirt and dust.Long hair and pet hair will clog the vacuum and get tangle in the brushes. The brushes must be kept free from items that get tangled in the bristles.