With pet hair care technology, focus on picking up hairs, dirt, debrisLow profile design to clean under beds, sofa where dirt hides. Cleaning priority-hardwood>tile>thin carpetSelf-charging, programmable schedule, smart sensors for anti-bump, avoid dropping. Run Time - 120-140 minsIdeal for hard wood floor. Easy operation with remote control, or auto clean all at one touch. Maintenance : Empty dust box and clean the filter after each use and replace a new filter every month