Compact body enables to clean hard-to-reach place. With Remote control,easy to adjust its walking direction . Five kinds walking lines ensure anywhere you allowed at home . special bounce,sprial,along wall,S shape,and polygonal spiral. Gentle-touch bumper protects furniture and wall surface. Patented triangle rolling brush and big capacity trash box helps in cleaning big trash. Sweep function,can be run at the same time of cleaning. Patented dummy wall design to prevent going anywhere you don?t want it to go Timed-cleaning , it will remember your order as preserved to clean the floor. With UV light,can kill the bacturiem up to 90% on your floor . Side brushes enlarge cleaning area with hair,dust or tassels. Built-in cliff avoidance sensors prevent from falling down stairs Self-recharging function,automatically search dock station to recharge as weak power. Big capacity of rechargable battery,enough for 100minites working time. Works quitely,with only 60dB noise. RoHs, GS, CE , UL certificate. Guarantee period:1 year. Battery : half a year