Application model Compatible with Roborock S7, T7, T7 Plus. (Please confirm your vacuum cleaner model before purchasing). Upgrade Simulating a sonic toothbrush, the ultrasonic mop can scrub the floor up to 3,000 times/minute, removing all stains at once and increasing the cleaning power by 4 times. With a single pass, the refined coffee stain removal rate is 91.41%. The vibrating mop adopts a dual-zone double-effect design, one zone removes stains and the other zone stores stains. Outstanding water absorption and water retention properties The upgraded steam mop pads are made of selected microfibers (polyester and nylon), which are better than the original material and will not scratch your floors. The super water absorption and water retention performance can effectively remove deep dry stains. Non-stripping fibers The upgraded steam train mat is made of selected microfiber, which is better than the original material and will not scratch the floor.