Powerful automatic vacuum cleaner with auto back to charging fucntion: start robot auto charging mode when finish work it will return to charging and into standby mode. Capable of sensor the amount of fine dust on the ground and adjust working time accordingly. Can preset time to clean you house like one time or any times in one week so even you are on work or business trip it can auto clean your house; Can jump through 2m obstacle capable of identify dangerous place such as desk stair to avoid being droped and broken; 2.0" LCD with alarm function; Multiple cleaning mode low noice and easy operation.