Wear your Formotion Snap-Back gauge on your wrist. (works only with Snap-Back capable gauges - indicated by the Snap-Back logo on the case back).  Kit includes 316L Stainless Steel Polished or Black color wrist watch conversion back.  Included O-ring.  22mm heavy duty nylon NATO style strap, as well as a case back screw driver kit and 4 additional case-back screws for easy removal.  Additional screws and O-rings also available separately.