1?��Wet Dry Dual Use: Dry mopping and wet mopping dual mode, imitating manual mopping, can be dry mopping or wet mopping, to meet various usage needs. 2?��Collision Buffer: Humanized collision buffer, can effectively alleviate the impact when colliding with furniture, protect the fuselage while also protecting the furniture. 3?��Wide Application: Coping freely on different grounds, adapting to a variety of grounds, intelligent ground recognition with light perception, deep cleaning of ground dirt. 4?��USB Charging: Smart robot vacuum cleaner supports USB charging, built in 1500mAh polymer lithium battery, charging time 3h, working time 120min. 5?��55db Low Noise: 55db low noise, does not affect rest and health. At the same time, robot vacuum cleaner will create a comfortable life for you.