The Red Dive Filter for the HERO3/3+/4 Standard Housing from GoPro is a color correction filter that prevents cyan color cast in blue saltwater and clear fresh water, such as in the Bahamas and other tropical locations. These waters naturally produce such color cast in cameras, and the filter instead enables you to capture accurate colors. It can be used in depths between 15 and 70 ft.
The filter snaps into place for tool-free installation, and features scratch-resistant, optical-grade glass designed to ensure optimal image clarity. A tether to secure the filter to the housing and a carrying bag are included.