1、ND Filter Function: Using this ND filter, you can get more freedom to control the aperture and shutter, bring more exposure means and creative space for photography creation, and effectively prevent overexposure. 2、Optical Glass: ND filter adopts optical glass, high sharpness, high definition imaging, to meet the needs of professional photographers. 3、Quick Disassembly and Assembly: ND reducing lens can be disassembled quickly without damage, light weight design, strong and durable. 4、Waterproof Coating: ND filter for DJI Action 3 has waterproof, oil proof, anti fouling, anti scratch performance. Easy to clean without leaving traces. 5、Compact and Portable: ND filter is compact and lightweight, easy to carry around. The number after ND represents the ND filter's ability to block light. Item Type: ND Filter for DJI Action 3 Material: Metal Aluminum, Optical Glass Color: As Pictures Shown Weight: Approx. 28g / 1.0oz Applicable Models: for DJI Action 3 1 x ND Filter 1 x Storage Box