Character: Robot Vacuum cleaner (R290) * Automatically cleans your floor without any hand labor while you enjoy life * Automatically search the intelligent charge base to recharge by itself when the power is short. * Stair Avoidance Detector assure the unit won't drop from the stairs and table. * The cleaner will escape automatically by itself when it was stuck by the furniture bottom or something else. * Non-Marring Bumper protect your furniture and wall surface. * Virtual Wall Detector make sure the cleaner work at the confirmed area which you want to clean. * Wall Following Sensor make sure this unit can clean most ground surface along the wall. * It keeps your floor clean between periodic deep vacuuming, *Self-adjusting cleaning head automatically traverses uneven floor transitions as it cleans carpet, hardwood, linoleum, and tile. * Easily slide out the bag-less particle bin to discard the dirt that it picked up. Specification: Main material :ABS,PP Input voltage of charger:100-240V AC Output voltage of charger:24V DC Voltage of battery:14.4V Unit average power:22watt Charge time of battery pack:4-5 hours Working time of battery: 70minutes Unit size:¢34*8CM Packing: Each one in color box, unit size of color box: 43.2*14*54.5cm 4pcs in one carton, unit size of carton: 67.5*55*45.5cm G.W:22.18KGS N.W:20.65KGS 640pcs in one 20container 1350pcs in one 40container 1450pcs in one 40 high container