1. Filter adapter ring is made of metal material, durable to use 2. Waterproof case is made of plastic material, coated glass lens with high transmittance; No matter in water or over the water 3. It mounts directly on the camera housing, and provides internal threads for installation of a 58mm filter in front of the camera 4. It a standard ring adapter with lens cap to install a 58mm filter 5. Compact, light and portable, easy to use 6. Compatible with GoPro HERO8
