A Gold Vision robot that cleans windows and glass, and also marble, kitchen walls and bathroom tiles. 5500 Pa of suction holds it firmly on vertical surfaces, and 60,000 movements per minute mimic a hand wipe. A dual ultrasonic spray wets the surface and leaves the glass streak-free, and smart Z-pattern paths cover the whole surface before it returns to its starting point. A UPS backup keeps it in place for 20 minutes if the power cuts out, with an external safety rope, and it is just 6 cm thick. - Suction: 5500 Pa - Water tank: 60 ml with automatic spray - Noise level: quiet, about 65 dB - Weight: only 1.26 kg - Control: smart app and remote control - Cord length: 5.5 m - Warranty: 1 year