, high-quality materials, well-made, , and highly matched with the equipment. Clean accessories keep your home robot at performance. Accessory contents are easily removed and replaced as part of routine maintenance. Also reduces the infiltration of dust, pollen and other into the air you breathe. In order to achieve the best cleaning and filtering effect, cleaning accessories should be replaced every 2-3 months according to the frequency of use. can greatly improve the air quality and reduce particle size up to 99.97%. Helps remove household dust, pet dander, and more. Say goodbye to odors, the pre-filter can help reduce unpleasant odors from pets, smoke, cooking fumes, and a variety of household products and chemicals. On board 3.7V lithium battery interface and charging circuit can be connected with external rechargeable lithium battery to realize external power supply and support charging and discharging at the same time Colour:As Shown Material:plastic Package Contents: 6 x Sweeper filter 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.