Fat Cat Professional Fat Cat 58mm Underwater Color-Correction Filter Dive Filter w/ Flip Converter for GoPro Hero3 it's easy to install to the Hero3 housing (A hero3 housing is compatible with Hero3+) . -Red (Blue & Tropical Water) - Needed to capture vibrant underwater colors at depths of 10 to 65 feet. This is the ultimate red filter for the GoPro Hero3 Camera. It provides razor sharp color correction for blue or tropical water. It simply snaps on to the Hero3 waterproof housing Easy Flip to switch to the normal mode and can be removed in less than a second. Armed Your Heroes Enjoy the underwater adventure.