The Blue Water Snorkel Filter provides color correction for your HERO5 Black while capturing footage at depths up to 5 to 33ft (1.5 to 10m). It's ideal for snorkeling in blue tropical salt water or clear freshwater. The filter easily presses into place on the camera for quick, tool-less installation, and can be used with or without The Frame. It's constructed of scratch-resistant, optical-grade glass for optimal clarity. Includes a microfiber bag and tether.