Description: Specially design for Hero 5/6/7. The UV filter is used to reduce UV rays from outside to the lens. UV filters are commonly used to help protect the surface of the lens from scratches, smudges, dirt and other hazards. The CPL filter provide color and contrast enhancement. Polarizers reduce glare from water, glass, or any non-metallic surface. You can also use a polarizer filter to darken blue skies. The red filter is necessary to the red light absorbed by water in natural light, mostly used in large blue sea water, less algae, good water conditions. The magenta diving filter can natural light due to the greenish scene caused by algae, often used for water green, algae plants, good water quality situations. The yellow diving filter can adjust the searchlight area, color effect is excellent. The red graduated filter enhances warm earth tones and is great for dramatic sky scenery. Ideal for photography and video filming. The blue graduated filter remain blue color of the sky and strengthen sky cloud effect while not influence ground . The orange graduated filter creates impressive sunsets or sets clouds into a dramatic scenery. The grey graduated filter provides a neutral color for a more balanced exposure when brightness varies. Specification: Size: 4.7x4.3x1cm Package Includes: 1 Piece Lens Filter Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.