Compatible For Roborock，S7 MAXV S7 MAXV Plus S7 MaxV Ultra Topaz SV，Electrically Controlled Water Tank Mop Cloth Mount Easy to disassemble and clean: The water tank can be detached from the vacuum cleaner separately and rinsed directly with water, making cleaning and maintenance effortless. Convenient status view: The transparent water level design allows you to clearly see the remaining clean water and the extent of dirty water, avoiding blind refills or missing the right time to empty the dirty water. Leak-proof sealing: The connection between the water tank and the main body of the vacuum cleaner is sealed to prevent clean or dirty water from leaking during movement or tilting, keeping the machine and floor dry. Fewer cleaning steps: There is no need to sweep before mopping; the water tank works with the vacuum cleaner to complete vacuuming and wet mopping in one go, saving cleaning time and effort.