BISSELL Smartclean Black Auto Charging Robotic Vacuum Garage door opener parts 975 in Manufacturer Warranty 3 975 in Manufacturer Warranty 3 Year Limited Warranty saves you time and money beds and chairs Powerful brush roll lifts and loosens embedded hair and lingering debris 8 volt Li ion battery provides 80 min of runtime on a full charge (charger included) Drop sensors signal the vacuum to maneuver away from stairs for worry free cleaning all around your home Invisible wall technology keeps the unit in the rooms you want to clean and out of the ones you don’t Auto charging means the vacuum returns to the docking station when cleaning is done or the battery is low 13 in W cleaning path picks up more dirt in one pass