EelVision Snorkeling Filter (SW) for GoPro HERO4 / HERO3/3+ - Shallow Water Snorkel Underwater Color Correction Underwater color correction filter to reduce blue and green tints and restore vibrant colors while snorkeling Most suitable for shallow water dives, free diving or snorkeling up to 20' (6 meters) deep It can be installed and removed easily from inside the HERO4 and HERO3/3+ housing. Does not require to remove screws and does not void GoPro's warranty! Compatible with GoPro HERO4, HERO3 and HERO3+ housings (Black, Silver & White) only.