BiG DIGITAL Red, Magenta, Yellow, Dive Filter (3 Pack) for GoPro HERO4, HERO3+ HERO 3+, 3 Plus Camera Compatible w/Dive Housing Only It Will NOT fit hero 3+ lcd touch bacpac or standrd housing, it will only fit Dive Housing Improves under water video colors by correcting the Gopro cameras white balance. The Red Dive Filter: is a color correction filter designed to remove cyan color cast while using the camera in blue-biased waters, and is ideal for use in blue salt water or clear fresh water at depths between 15 and 70'. Dive sites where one might use this filter include sunny, tropical locations such as the Bahamas, Cayman Islands, and Hawaii. The Magenta Dive Filter: is a color correction filter designed to remove excess green color cast encountered green-rich water, such as freshwater lakes and reservoirs or salt water that appears green due to high algae content. It works best at depths between 15 and 70' The Yellow filter is great for night activity