EelVision Underwater Filters for GoPro HERO4 HERO3/3+ (2 pack: Red + Snorkeling) / Scuba Diving / Snorkel / Underwater Color Correction Underwater color correction filter to reduce blue and green tints and restore vibrant colors while diving. Bundle contains two filters, for blue and blue-green water (BG) and for shallow waters (SW) It can be installed and removed easily from inside the HERO3 housing. Does not require to remove screws and does not void GoPro's warranty! Compatible with GoPro HERO3 housings (Black, Silver & White) only.