Winbot 7 relies on a dual suction system which ensures that it remains stuck to the vertical glass sheet quite like Spider-Man. I guess you would say that this is a vertical version of the Roomba, except that it comes with a three-stage cleaning system that is meant to clean glass surfaces, sporting a wet pad, a squeegee and a drying cloth. Definitely a whole lot safer than putting a human there, but is the suction capability of the Winbot 7 powerful enough to ensure it remains there? Expect the Winbot 7 to retail anywhere between $300 to $400 from this summer onwards.