This is the window cleaning system that produces professional, streak-free results faster and easier than washing by hand. The robot determines the size of a window, maps out the optimal cleaning path, and cleans in a thorough, efficient pattern while automatically avoiding frames and sills. Users simply spray the included cleaning solution on the microfiber cleaning pads and it removes dirt, grime, and smudges as the robot courses across a window. The microfiber pads dry the window and wipe away streaks while an internal vacuum pump keeps the robot affixed to the window. It can be operated with the included remote control (includes two AAA batteries) or using a smartphone app. AC plug with 20' cord. 11 1/2" L x 5 1/2" W x 4 1/2" H. (2 lbs.)