W120 can be available to frame and frameless glass,tables and smooth floors or wall surfaces. No more moving on heavy furniture or climbing dangerous ladders to clean outside, tall or hard to reach windows,less strain to lumbar muscle Intelligent cleaning routes ?anti-falling sensor with strong safety rope equipped remote control available Built-in battery 650mAh for emergency use APP available for both IOS & Android systems remote control available The powerful suction of the motor allows the glass cleaner to be firmly held on the vertical glass surfaces low noisy level?65DB and multi-direction anti-falling sensors. Due to the Aviation restrictions, Package does not include clean solution.