The new Omega Seamaster 300 features a domed sapphire crystal as well as an exhibition sapphire caseback. It is through that caseback that
link you can see the METAS certified Omega Master Co-Axial
link caliber 8912 with 60 hours of power reserve beating away inside. As mentioned, the 300 comes in either a blue or black dial/bezel
link variation, on a bracelet or a strap.