Moder no.: KRV210 Moq: 500pcs Charging&working time: 30-35mins, 6-8h Noise: 70db Weight&package: 2.2kgs/pc, battery: 800ma, ni-mh Delivery time: 25-30d • can auto-cleaning and auto-charging (before the battery’s power run out, the cleaner will search the station and charge automatically) • charging time can be set to clean at a certain time any day /some day all days of each week • with stair avoidance sensors for avoid the cleaner falling down • with non marring bumper (when meet barrier, it will rebound, but work still) • with touch-sensitive sensor to get out of the tight places, such as sofa, bed and more • with virtual wall (if you need clean one room/a certain area only, you may open the virtual wall, the cleaner will never go out the room/area) Gift-box size: 34.5*34.5*14.5cm4pcs/carton: 56.5 *36.5*37cm20gp-1488pcs, 40gp-2850pcs, 40hq-3580pcs.