Feature: 1. Optical Glass: Camera filter is precise ground and polished for high definition imaging with minimal distortion or loss of clarity. Camera filter is coated with oil and water resistant coating on both sides, which can effectively protect the lens. 2. Stable Installation: Camera lens filter is used with a filter holder, which can be firmly mounted to ensure precise positioning of the filter and more stable photography. This stability leads to more accurate and reliable results, especially when taking photos. 3. Integrated ND2-400 Filter: All in one ND2-400 filter is adjustable, no need to change the filter frequently, it can meet a variety of photography effects, very convenient for you to take outdoor photography. 4. Wide Compatibility: The filter can be mounted on a cell phone through the filter holder, also suitable for 67mm diameter lenses, a wide range of uses. This wide compatibility expands the filter potential uses and applications. 5. Adjustable ND Filter ND2-400: This filter allows for flexible adjustment of light transfer, making it suitable for various lighting conditions. With the ability to easily control shutter speed, it enables capturing motion blur or controlling overexposure, enhancing photography creativity. Specification: Item Type: Camera Filter Material: Aluminum Alloy, Optical Glass Filter Size: Approx. 67mm/2.63in. Package List: 1 x Adjustable ND Filter 1 x Storage Box Note: 1. This filter can only be used on a phone with a filter holder (a filter holder is required for use on a phone); 2. The filter can only be used on a 67mm camera lens.