Features: 1. Optical Glass Lens, Clear Imaging;2. Multi-Layer Coating Process, Lens Oil-Proof, And Anti-Scratch;3. Aluminum Alloy Frame, Strong And Corrosion-Resistant;4. Adjustable Filters To Meet Different Scenes;5. Snap-On Loading And Unloading Design, Fast And Convenient,This Filter Can Only Be Used In The Mavic3 Classic EditionDescription:Coating Instructions:Nano CoatingPhoto Filter Effect Type :Neutral DensityType: C: ND64-Size: 3.7 x 3.5 x 0.4cmMaterial: Aluminum optical glasscolour: blackPackage Contents:1 x Outer Box1 x Magnetic Absorption Nanobox1 x Filter1 x Lens ClothOnly 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.