1.       Clean the floor automatically according to on the size of your room. 2.       Protect the furniture and wall from crashing and scraping 3.       Avoid entering the zone you don't want to clean-----by Virtual Wall Detector. 4.       Sweep floor along the wall or other obstacle-----by Wall Following Sensor. 5.       Can be used on the uneven carpet, wood floor, linoleum, etc, and cross any thin barriers, such as wires, pad, etc.-----by Self-adjusting cleaning head. 6.       Can be commanded to move for 4 different directions manually-----by Remote Control. 7.       Can do the cleaning task at a specific time you preset everyday automatically; Can be preset to automatically start work when the recharge is finished.----- by Intelligent Recharge Base.