4.USB RECHARGEABLE. Built-in rechargeable lithium-ion battery, cleaning for up to 90 Quietly and silently thorough cleaning, easy to clean even when working, sleeping. 1.HIGH EFFICIENCY. This USB automatic vacuum with remote control, 4 cleaning modes. Satisfy different cleaning needs. Better sweeping for shorten cleaning for time and improve efficiency. for Ideal for cleaning all kinds of hard floors/flat floors. 3.for SMART CHIPS&LOW NOISE. Built-in for smart chips, for touch contol. With cleaning timer, when finish auto -shut-off. Automatic sweeping, mopping, vacuuming, no dead ends. for ideal for large room, meets all your cleaning needs. 5.WIDE APPLICATION. We offer you 2 kinds of set: With remote control and without remote control. Both provide perfect working Suitable for all flat floors such as marble, hardwood floor, ceramic tile, wood floor, It can deeply and completely clean dust, hair, biscuit crumbs, cereals, 2.SUPPER THIN BODY. Thickness only 1.57inches, low-profile body allows the Robot Vacuum Cleaner reaches every corner and narrow space with ease. Easily clean about 120-150㎡ room. Package includes: 1 x Auto Vucuum Cleaner; 1 x cleaning mop cloth; 1 x brush; 1 x screws; 1 x screwdriver ; 4 x cleaning brush; 1 x manual.