High definition protective ND optical glass filter for Osmo action camera 1. Reduce the amount of of light entering the camera, prolong exposure time and reduce shutter speed effectively. 2. The number behind ND represents the capacitance. from the ND lens to; block light, the larger the number, the greater the capacitance. Light reduction is strong. 3. Manufactured made of high-definition transparent colorless optical glass, which helps to improve clarity of the photo and color reproduction, suitable for to the Osmo Action camera. 4. Protect the lens from dust and scratches. In normal use, it can be shaken. or skipped to will without fear of falling. 5. Design to strong magnetic adsorption, can be firmly adsorbed approaching slightly, adapts perfectly to the lens, well coordinated, easy to disassemble. Specification: Item Type: ND Filter Material: Optical Glass + Alloy Color: Black Weight: Approx. 27.0g/1.0oz Suitable for; Osmo Action Camera Effect: Reduce the amount of of incoming light and extend exposure time Package List 1 x ND Filter 1 x Manual