The Xiaomi X20+ Robot Vacuum is equipped with the S-Cross™ obstacle avoidance system: With a large optical structure, it can detect and avoid low obstacles thanks to its wide-angle perception, even in low light conditions. The LDS laser navigation system: Creates a precise 360-degree scan of the indoor environment and quickly maps out the house. Thanks to smart planning, the cleaning path is optimized for a comprehensive and highly effective clean. The extremely large 4-liter water tank: Eliminates the need for frequent water refills, providing greater convenience. A full water tank is sufficient for mopping an area of up to 280 square meters. Automatic cleaning: After cleaning a room, the vacuum automatically returns to the base to wash the mop pads to keep them clean. All-in-one smart base station Powerful 6000 Pascal suction fan High-speed rotating mop: With a rotation speed of 180 revolutions per minute. 4 adjustable suction speeds: Quiet, Standard, Strong, and Turbo 4 cleaning modes: Vacuum before mopping, Vacuum, Mopping, Vacuum and Mopping Laser navigation + obstacle avoidance sensor Smart mop lifting Voice notifications: Easily follow the cleaning progress through voice notifications Automatic mop washing and drying: Saves time and energy Voice control: Works with Amazon Alexa or Google Assistant