Features: Brand new and high quality Pink filter: Corrects color deviation. Restores blue color. Suitable for underwater use. Red filter: Corrects color deviation. Restores green color. Suitable for seawater shooting. Purple filter: Corrects color deviation. Restores blue color. Suitable for freshwater shooting. Compatible with original GoPro Hero 9 Black housing case. (Note: Please make sure your case is original.) Does not include the camera or waterproof case. These are filters for your original case. Specifications: Material: Optical glass Color: Pink, red, purple (optional) Note: No retail package. Please allow 0-1 cm error due to manual measurement. Please ensure you are comfortable with this before purchasing. Due to differences between monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Diving Filter