[Compatible Models]Perfect For X40 / X40 Pro / X40 Ultra Robot Vacuums. Made of high-quality materials, environmental friendly materials, soft and to use. The clean water tank is specially designed for easy installation. Unplug the filter accessories at the bottom of the clean water tank and install the silver ion module. it tightly. the ground is fresher and play is worry-free. Silver ions travel to the ground through the waterway to achieve effective cleaning. Children run , and mothers don't need to worry Easy to install and remove, no need to spend extra energy and time. Please note:Slight color difference or difference in kind, does not affect the use, please do not mind, thank you! Color:As Shown Material:plastic Specifications:A Package Contents: 4 x Robot Sewage Tank Ion Odor 1 x Cleaning brush 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.