1Application: The filter can be used for underwater photography of waterproof camera housing, and the two sides are screwed on both sides for shooting. 2Function: The red filter is suitable for 525m / 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. 3Macro 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. 4Easy 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. 5Applicable Models: The set includes 58mm red diving filter, 16x macro lens, adapter ring and some accessories, specially designed for HERO 9 sports camera. Item Type: Red Filter with 16X Macro Lens Material: Optical Glass + Aluminum Alloy Filter Color: Red Filter Diameter: 58mm / 2.3in Product Weight: Approx. 122g / 4.3oz Applicable Models: Suitable for Hero 9 Action Camera 1 x Red Filter (installed) 1 x 16X Macro Lens (installed) 1 x Storage Box 1 x Cleaning Cloth 1 x Hand Strap 1 x Adapter Ring