1. Adopts professional optical glass lenses for high-definition image quality; multi-layer coated filters provide high light transmittance and true color reproduction. 2. Magnetic design allows for quick installation and removal; simply bring it close to securely attach without worrying about the filter falling off, enabling quick filter changes at any time. 3. Compact and portable, easy to store; filters can be installed into the filter slot of the official protective case. 4. ND Filter: Choose an ND filter according to the environment to reduce the amount of light entering the lens, allowing you to freely control the aperture and shutter speed, effectively preventing overexposure, enhancing color saturation, and making the image clearer, achieving effects such as misty water flow and star trails. 5. Material: Aluminum alloy + optical tempered glass.