1.robot vacuum cleaner 2.Anti-fall, collision 3.Low noise , less than 50DB 4.Sterilizing UV light 5. Auto recharging Product details:.Ultra thin body design, it can dig into the bottoms of the furniture inconvenient to clean, such as the sofa, bed, tea table, etc. so using this cleaning robot you can easily clean the bottoms of the furniture. Ultra low noise, the operating noise is not more than ...