1. Optical glass, precision grinding and polishing, high-definition imaging; 2. Double-sided multi-layer nano-coating technology is used to restore the true color, 3. Double-sided oleophobic and waterproof, escorting your lens; 4. The hook design can be tightly fixed on the lens, and it will not fall accidentally during flight; 5. The original lens will not be damaged during installation, and the filter can be replaced at any time to prevent you from missing the wonderful moments Main material: plastic (frame) + optical glass Net weight: 0.6g (single), 1.8g (3-piece set), 2.5g (4-piece set), 3.6g (6-piece set) Gross weight: 22g (single), 23.6g (3-piece set/4-piece set), 47.4g (6-piece set) Product size: 2.2*1.9*1.8cm Packaging size: 6.3*6.3*2cm (single/3-piece set/4-piece set), 8.1*8*2cm (6 sets) Packing list: filter x 1 Packing method: boxed Notes: 1. Only UV filters can transmit 98.5% of light, and CPL/ND filters cannot be expressed by transmittance;