Feature:1. HIGH DEFINITION OPTICAL GLASS: The lens is made of high quality optical glass through high definition grinding treatment, which can produce high definition picture quality.2. COATING DIMMING PROCESS: The use of coating light reduction technology avoids the color cast problem of traditional ND mirrors, and there is almost no color cast.3. MULTI LAYER COATING: With double sided multilayer nano coating technology, the lens has waterproof, oil proof, anti fouling and scratch proof performance.4. ND LENS FILTER: ND filter can prevent overexposure in strong light environment, resist scattered light, increase color saturation, make the picture more transparent, and achieve a large scale effect. The number after ND represents the dimming ability.5. ND32 to ND256 VARIABLE: The variable ND Filter is adjustable from ND32 to ND256, you can adjust it according to the shooting requirements. A filter includes 4 levels of light reduction capability, which is very practical and convenient, suitable for DJI Air 2S Camera.Specification:Item Type: ND Lens FilterModel: ND6-9Material: Aluminum Alloy + Optical GlassProduct Color: As Pictures Shown Product Weight: Approx. 25g / 0.9oz4 Levels Adjustable: ND32 ND64 ND128 ND256Applicable Models: Suitable for DJI Air 2S Camera .Package List:1 x ND Filter1 x Storage Box