Automatic Water Spraying: This window robot features an automatic ultrasonic water spray function, effectively deep-cleaning windows to ensure every corner of the glass sparkles.The wide spray pattern keeps the cleaning area moist for optimal performance.Switch between automatic and manual water spraying via the remote control.The 35ml water tank is sufficiently large to clean all the windows in your home. Powerful Suction: With 5600Pa suction power, the window cleaning robot securely adheres to windows at all times. It removes various types of grime, saving you the high cost of manual window cleaning. Our automatic window cleaning robot boasts high load capacity, ensuring a firm grip during cleaning. The window-opening robot works on all smooth surfaces like glass, tiles, and even wooden doors.