1. Double-sided multi-layer nano coating process is used to endow the lens with high-quality waterproof, oil-proof, anti-fouling and anti-scratch performance;2. Aviation aluminum frame material, the logo is engraved by laser laser without fading, and the black matte frame prevents ghost image caused by light leakage;3. One lens with multiple gear adjustment, after installing the filter, the filter gear can be rotated to adjust the gear according to the needs of the scene, eliminating the tedious steps of disassembling and assembling the filter;4. Magnetic absorbent case tailored for the set of filters, the box is equipped with a soft sponge, which holds the filter in place, is easy to replace, and can also store the original lens frame.