1. Main materials: plastic (frame) + optical glass 2. High-definition glass delivers true color transmittance, allowing for natural gradients in blue skies and vibrant greenery, showcasing natural colors. 3. Double-sided nano-coating improves light transmittance, ensuring clear filters and stable film output. 4. Hydrophobic and oleophobic, it resists water and fingerprints during outdoor aerial photography, making it easy to wipe clean. It also reduces scratches when stored for daily use. 5. Lightweight frame ensures stable flight, eliminating gimbal calibration and adding no flight burden. It also ensures stable flight and meets the needs of long-term photography. 6. The UV filter effectively reduces UV-induced light, creating a blue tint that increases light transmittance for clearer images and also serves as a lens protector. 7. The CPL polarizing filter eliminates harmful reflections, enhancing image clarity and color saturation. 8. The ND filter, with 8, 16, and 32 stops, reduces strong light interference on sunny days to prevent overexposure. Combined with the shutter speed, it creates a layered, slow-motion image. 10. Snaps shut and snaps off easily, making it easy to change filters after flight or store them for everyday use. 11. Installation does not damage the original lens, allowing you to change filters at any time. 12. Dimensions: 3.4 x 2.88 x 1 cm 13. Net weight: 1.5g (single unit) 1.6g (CPL)