It's a renewed product: The refurbished product has been professionally inspected and tested to work and look like new. There will be no visible imperfections on the product. Advanced FlexiArm Design - Roborock's FlexiArm extends the side brush to reach concave corners with 100% coverage and hard-to-reach spaces under furniture. Coupled with the Extra Edge Mopping System, it achieves precise edge cleaning with a cleaning precision of less than 1.68mm. Upgraded All-in-One RockDock Ultra - The RockDock Ultra revolutionizes cleaning with automatic hot water mop washing (up to 140°F) that effortlessly dissolves stubborn stains from the mop. Its intelligent dirt detection ensures optimal mop-washing time, and returns to heavily soiled areas for thorough cleanliness. Enjoy a fresh environment with automatic hot air drying, which prevents unpleasant odors. The automatic detergent dispenser provides over 3 months of cleaning support with a single fill, while automatic dust collection, water replenishment, and a self-cleaning base ensure hassle-free maintenance, saving you precious time. Unmatched Cleaning Performance - With unparalleled 8000Pa suction, unleash the formidable cleaning power of the S8 Max Ultra to achieve spotless perfection in your home. The upgraded mop features dual vibration modules that can easily manage dust, dirt, and dry stains through high-speed scrubbing at 4000 times per minute. Smart Navigation and Obstacle Avoidance - Experience intelligent cleaning with the S8 Max Ultra's Reactive 3D Obstacle Avoidance and PreciSense LiDAR technology. Detecting and skillfully bypassing objects with its 3D structured light technology, the robot vacuum creates detailed maps for precise navigation thanks to its PreciSense LiDAR navigation system. Efficient Carpet Care - With 20mm Auto Mop Module Lifting, the S8 Max Ultra lifts the mop automatically while cleaning carpets, preventing unwanted dampness. And take advantage of the Roborock app to access a range of carpet cleaning options. Choose from vacuuming carpets first, deep carpet cleaning, or activating carpet boost mode to tailor your cleaning experience to suit your specific preferences. Upgraded App Control - Experience a new standard of cleaning efficiency with the upgraded Roborock app, boasting cutting-edge AI algorithms. The Roborock SmartPlan intelligently selects different cleaning intensities based on specific areas, optimizing your cleaning routine. Seamlessly manage unexpected situations with Temporary Cleaning, ensuring uninterrupted cleaning sessions. Tailored for pet owners, Pet Area Deep Cleaning ensures thorough cleaning of pet-occupied areas. Smart Suggestions for No-Go Zones and 3D mapping further enhance cleaning precision, guaranteeing efficient performance throughout your home. *Only support 2.4G WiFi, 100V-120V.