1. High-hardness scratch-resistant glass material: The lens is made of high-aluminum glass with higher hardness, which is not easily scratched by sand and dust in the airflow during flight; The white material base has good light transmittance, ensuring that the picture is color-free during high-speed dive. 2. Metal frame: The frame is made of CNC metal material, which is strong and light, not easy to deform; it can effectively resist impact and prevent the filter from loosening, affecting use, or falling and getting lost. 3. ND filter: Reduces the amount of light entering, prevents overexposure of the picture, and keeps the dynamic blur natural during high-speed flight. 4. UV filter: Transparent and colorless, physically protects the lens from being scratched by branches/gravel, and presents the picture quality without loss. 5. Multiple specifications: The set includes UV/ND8/ND16/ND32 lenses, which can meet most daily use scenarios. 6. Name: Filter Kit 7. Applicable: for O4 Air Unit Pro 8. Filter model: UV/ND8/ND16/ND32 Filter 9. The product appearance and printed words may vary depending on the batch, but this does not affect use. 10. Colour: As Shown 11. Material: CNC aluminum parts + high aluminum white glass 12. Package Contents: 1 x Filter Kit. Only the above package content, other products are not included. 13. Note: Light reflection and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.