Omega Seamaster Diver 300M Ref 212.30.44.52.03.001. There are several editions of the Seamaster available on the Omega market. Whether you seek a simple diver or one with dual-time functions and a chronograph feature there is a model available to suit your lifestyle. The ref. 212.30.44.52.03.001 for sale here is a professional diver complete with a 24-hour track around the dial’s perimeter a dedicated GMT hand stopwatch function and uni-directional 60-minute bezel. This example is presented in stainless steel and features a contrasting blue bezel and dial. Yellow accents give the dial a sporty aesthetic that is hard for any collector to resist. Discover additional models available by browsing our OMEGA watches collection page.