Optimal Hygiene Solution: Upgrade your for Narwal Freo X Ultra or J4 with the Ag+ Sterilization Module. This essential accessory utilizes powerful silver ions to ensure a higher standard of cleanliness and hygiene in your home. Advanced Sterilization Technology: The silver ion technology targets and reduces bacteria effectively, promoting a healthier environment. Perfect for homes needing extra care to maintain a sterile atmosphere. Easy Installation: Designed for seamless compatibility with for Narwal Freo X Ultra and J4 models, this module is easy to install, ensuring that your robot vacuum cleaner is back to work with enhanced capabilities in no time. Durable and Efficient: Crafted from high-quality materials, the Ag+ Sterilization Module is built to last, providing long-term cleanliness with minimal maintenance required. Colour:As Shown Material:plastic Package Contents: 4 x Silver Ion Disinfection 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.