【Dual Spray/Quad Spray】: This Electric Window Cleaning Robot Is Equipped With Dual Spray/Quad Spray, And Uses Automatic Cleaning To Effectively Remove Dirt And Enhance Cleaning Capabilities, Allowing You To Maintain Windows Easily. 【3 Intelligent Cleaning Modes】: Features Three Unique Cleaning Modes. The Z-Pattern Mode Offers Efficient Horizontal Cleaning, While The N-Pattern Mode Focuses On Vertical Movement. The Deep Cleaning Mode Combines Both Patterns For Effective Stain Removal. 【Ultra-Dense Bristles For Superior Cleaning】: Designed With Approximately 45000 Ultra-Dense Bristles That Are Soft, Enhancing Moisture Retention And Dust Capacity For Improved Dirt Removal Compared To Standard Bristles. 【2500-3000pa Super Suction】: With Super Suction And Brushless Motor, This Robot Can Firmly Adsorb On Windows. Its Functions Include Edge Detection, Power Outage Protection (Can Maintain Suction For More Than 20 Minutes When Power Outages), And Safety Ropes Suitable For High-Rise Use To Ensure That Indoor And Outdoor Windows Are Clean And Worry-Free. 【Widely Used】: Square Body And Rag (Washable/Reusable) Can Easily Clean Hard To Reach Corners, Power Cord + Extension Cord Can Easily Extend To High Windows For Quiet Operation.