Clean the outside of your windows easily from the inside! Easily clean the exterior of high-building windows. Buy this device. Due to strong magnetic technology, wiping the inside of the window easily cleans the outside part as well. Safe: No need to put hands outside the window or lean out dangerously. Anti-Falling Rope: 1 sturdy safety rope tied to your wrist, so there is no fear of the outer part slipping from your hand and falling down. High-quality sponge and rubber scraper thoroughly clean dirt and water without leaving any scratches or marks on the glass. Usage: 1. Tie the safety rope to your wrist. 2. Wet the cleaner slightly with water and apply a little glass cleaner soap or liquid. 3. Set one part inside the window and the other part outside using magnets. 4. That's it! Carefully wipe from the inside, and both the inside and outside will shine together at once.