new, high-quality materials, well-made, , and highly compatible with the equipment. In order to achieve the best cleaning and filtering effect, cleaning accessories should be replaced according to the frequency of use. The parts have a longer life cycle and better cleaning effect, which protects the robot from excessive wear and reduces the service life. The slow-release silver ion module continuously release silver ions into the water, and the rate is as high as 99.9%1. As the cleaning progresses, the silver ions continue to be transferred to the ground and the sewage tank, making the whole house cleaning, water storage, mop washing and sewage recycling process more at ease. Color: White Material: plastic Package Contents: 4 x Silver ion module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.