Item Type: Action Camera ND Filter Set Material: Aluminum Alloy Glass Compatibility: for Osmo Pocket 3 Camera Weight: 30g/1.06oz Package List 4 x ND Filters 1 x Storage Box 1ND Filter for Long Exposure: The ND filter reduces the amount of light entering the lens, preventing overexposure and allowing for longer exposure times. It adds a sense of speed to cycling footage and creates silky smooth flowing water effects, while also capturing dynamic cloud movements. 2Imaging Grade Optical Glass: Made with optical glass of DSLR lens, ensuring high definition image quality without blocking the field of view of the camera lens. It provides excellent light transmission and is resistant to scratching, water, and oil stains. 3Double Sided Multi Layer Coating: Reduces light reflection between lens elements, resulting in clear and superior image quality. Ultra thin, measuring only 2.2mm. It can be left on when the camera is turned off, allowing for efficient creative workflow at all times. 4Large Magnetic Surface Area: The filter has a large magnetic surface area, securely attaching to the lens without interfering with the camera's power switch, making it easy to handle various motion scenes. 5Compatibility: Designed to seamlessly fit with the official protective lens, ensuring compatibility without concerns about other accessories. It is compatible with for Osmo Pocket 3 camera.