HOBOT-198 is your perfect window cleaner...but better. This glass cleaning robot features upgraded wheel motors with a higher rotating speed, fool-proofing design, smartphone integration, safety design, and a lot more, making cleaning a lot more effective yet convenient. A forceful vacuum sucks out a large proportion of the dust and also helps two cleaning wheels covered with a microfiber cloth extra removing the impurities. With a microfiber cleaning cloth, HOBOT-198 thoroughly cleans without scratching the glass surface. HOBOT-198 can be controlled by iOS or Android. Simply download the free app, tap to connect, and voila! You're all set for better window cleaning.