Features: 1. A set of red-purple filter set can only be used with waterproof case, used for underwater shooting at a depth of 5-25 meters 2. Magenta filter restores the greenish sea water system 3. The magenta filter restores the blue water system 4. The purple filter restores the greenish freshwater system 5. This filter set can't be used individually. 6. Slim and lightweight, do not increase burden to your camera 7. 100% sealed to ensure good water resistance and protect the camera more effectively 8. The professional waterproof ring design makes the waterproof shell deeper and deeper up to 25M. 9. 1:1 real machine open mold, fit to the camera perfectly 10. Nice accessories for diving, swimming, surfing, travel and other outdoor activities Specifications: Condition: Brand New Filter material: PC Waterproof case material: High permeability PU material Tempered glass For GoPro Hero 9 Black Camera Package Include: 1* Waterproof Housing Case 1* Base 1* Long Screw 3* Filter