Household Dust Catcher: The bottom of the front suction is firmly absorbed in. Study Mode: Automatic driving with a focus on silence, designed for studying in a child's room or reading in the study room. Equipped with nanoy: Suppresses 4 types of pollen Product size (H x W x D): 23.2 x 13.0 x 9.8 inches (590 x 330 x 250 mm).