UanTii Water Spray Window Cleaning Robot Intelligent High-rise Double-sided Brushless Motor Glass Cleaner Spray Type with Remote Controller

【 Anti-drop and intelligent power off battery life】The safety rope uses the +lithium battery to prevent the fall. When the power id off, the built-in lithium battery can still work for 30 minutes to prevent the product from falling, and also it comes with safety rope, could protect it;