An excellent device. You can install it on the window and go about your business at the same time. The cloths are easy to remove and wash. The cleanliness of washing the windows was pleasantly surprised. The device is easy to use. Solved the problem of washing windows on a high floor - we have the 9th. Pros below: Autonomous system, allows you to do your own business in parallel. The cloths are easy to remove and wash. Cleans windows. Has cons: Doesn't wash corners, but that was to be expected and streamed immediately prior to purchase