This is a multi-functional vacuum cleaner and cleaning system from the famous Rainbow brand, which relies on water filtration instead of traditional bags. How it works and the roles it performs: Dust suction and water filtration: It sucks up dust and dirt and directs it directly to a water basin below, which prevents dust from being trapped inside the vacuum or re-leaking into the room's air. Deep cleaning of carpets and rugs: The wide attachment at the bottom (Power Nozzle) contains a rotating electric brush that works to shake out and clean carpets and upholstery from deep dust and pet hair/fibers. Purifying and scenting room air: The device can be operated in a corner without a hose (by placing clean water and a little freshener or disinfectant in the basin), to act as an air purifier, humidifier, and air circulator in the room. Liquid suction: It can be safely used to suck up water spills and wet floors (provided the water basin is emptied and cleaned after use).