Equipped with the S-CrossTM obstacle avoidance system, the Xiaomi X20+ Robot Vacuum Its wide-angle perception, even in low light, allows it to detect and avoid low obstacles because of its large optical structure. The LDS laser navigation system swiftly maps out the house and produces an accurate 360-degree scan of the interior space. The cleaning path is optimized for a thorough and incredibly efficient clean because of careful planning. Greater convenience is provided by the incredibly large 4-liter water tank, which removes the need for frequent water refills. An area up to 280 square meters can be mopped with a full water tank. Automatic cleaning: The vacuum automatically goes back to the base to clean the mop pads after cleaning a room.