This demonstration video goes over the features of the Oceanic Octo Swiv with Magnetic Keeper. The Magnetic Octo Keeper takes the hassle out of locating and attaching on a BC. It may be mounted over or under your shoulder. the bright "Hi-Viz" yellow hose and 2nd stage cover allows for easy identification. It is also Nitrox compatible to 40% (The recreational limits of Nitrox).