"OMEGA first introduced the Seamaster 300 in 1957 - it was a watch designed especially for divers and professionals who worked underwater.
More than half a century later, the timepiece makes a comeback in a completely upgraded and enhanced form, ready for a new generation of adventurers. This Seamaster 300 has a sand-blasted black dial with 18K Sedna™ gold hands coated with ""vintage"" Super-LumiNova. The 18K Sedna™ gold bezel has a Ceragold™ ring and diving scale.
The 41 mm stainless steel case is presented on a stainless steel and 18K Sedna™ gold bracelet. A transparent caseback makes it possible to see the anti-magnetic OMEGA Master Co-Axial calibre 8400 within."