If you’re using ONE X2 /ONE R / ONE X / ONE / GO 2 in rough water conditions (e.g Surfing, Jet Ski) you should use the Dive Case to keep your camera protected. GO 2 must be assembled with the Action Mount Adapter. The bundle includes head strap (with chin strap), chest strap and handlebar mount. The waterproof housing is not included. Compatibility: X3 / GO2 / ONE X2 / ONE R / ONE X / Important! ONE RS (1-inch 360 excluded)