Feature:1. Application: The filter can be used for underwater photography of waterproof camera housing, and the two sides are screwed on both sides for shooting.2. Function: The red filter is suitable for 525m or 16.482.0ft in tropical or blue waters. It can effectively restore the red light source absorbed by the water and correct the color deviation.3. Macro Lens: With a 16x macro lens, you can take more details and use it to take photos of flowers, small collectibles, coins and stamps, insects, small creatures or small objects that require close up details.4. Easy to Install and Disassemble: The disassembly and assembly is simple and convenient, and the filter can be used by pressing it tightly on the lens of the waterproof case.5. Applicable Models: The set includes 58mm red diving filter, 16x macro lens, adapter ring and some accessories, specially designed for HERO 9 sports camera.Specification:Item Type: Red Filter with 16X Macro LensMaterial: Optical Glass and Aluminum AlloyFilter Color: RedFilter Diameter: 58mm or 2.3inProduct Weight: Approx. 122g or 4.3ozApplicable Models: Suitable for Hero 9 Action Camera.Package List:1 x Red Filter (installed)1 x 16X Macro Lens (installed) 1 x Storage Box1 x Cleaning Cloth1 x Hand Strap1 x Adapter Ring