1、INCREASE EFFICIENCY: Regularly replacing the water tank can effectively increase the efficiency of your sweeping robot. With increased use, the internal parts of the sweeping robot may be damaged to some extent, and replacing the water tank can ensure that the sweeping robot is in good working condition. 2、MADE OF ABS MATERIAL: The water tank is made of durable ABS material, which has high durability and pressure resistance. This material can effectively protect the water tank so that it can be used for a long time without being easily damaged, and it also helps to clean the floor. 3、ESSENTIAL COMPONENT: The water tank is a good helper for the sweeping robot to organize the room. By loading the water tank, while the vacuum cleaner cleans the floor, it can also perform scrubbing and mopping operations, providing a more comprehensive cleaning effect and making your room more tidy. 4、EASY TO REMOVE AND REPLACE: The water tank is easy to remove and replace as part of normal maintenance. Users can easily clean and replace the water tank to ensure that the sweeping robot is in good working condition and extend the life of the robot. 5、APPLICABLE MODELS: The water tank is designed for PROSCENIC 800T 820 830 850P series sweeping robots and for LIECTROUX C30B sweeping robots. Users can choose and install this accessory with confidence to ensure its normal use and efficient work.