1.If you live in a high apartment,It's hard and dangerous to clean the windows outside,this is the product for you.It has a safety cope which can ensure it works safety. 2.If your house have windows that require tall ladders, or you are older and don't enjoy ladder work, dislike paying to clean the windows, then this is the product for you. All you need do is reach a corner of your window, stick on the cleaning robot, turn it on, wait until it finishes cleaning, it returns to the same spot, then move it to the next window. Does a great job of cleaning for your house.Many families like them very much. 3.Many shops have big and high windows,it's easy to get dusty,not convenient to clean,you need to pay for the cleaning workers.With this robot,you can save your money.You can clean your windows often to keep the shops windows clean and bright. 4.If your office have big windows or desks,it's not easy to clean by yourself,the robot can help you. 5.Many houses have sun-roof,some have windows of roof.They are not easy to clean.If you climb so high,it's dangerous.You can put the robot on them,remote control it or let it work automatically.It's very small and light,very safety to stay on the roof windows and clean them well.