Auto Empty Station, 1.8 litre capacity, Dustbin holds up to 6 weeks worth of dust, HEPA filter with 99.99% efficiency, Intelligent dust collection, Cyclone collection with dust bag support, Certified for allergy care, catches 99.99% of particles, Smart - automatically customizes its emptying cycle to your own needs and environment, adjusting its use to be as undisruptive as possible, blackThe cutting-edge Roborock Auto-Empty docking station automatically empties and recharges your robot vacuum. Intelligent collection, a large dustbin, and added layers of filtration capture up to six weeks’ worth of dust, allergens, dander and more. Clean often, empty rarely.