Omega will produce these new Omega Speedmaster Racing Co-Axial Master Chronometer in steel, two-tone steel and 18k Sedna gold, and in all Sedna gold. Moreover, there will be versions on straps or on steel bracelets. More design refinements can be found on the dial and bezel. The subdials are a bit larger, which is a good thing; the lume-filled, applied hour markers now have slightly tapered ends; the date window is neat-looking and tapered; and the bezels use interesting new production techniques. This is overall the best-looking modern Speedmaster, combining handsome, comfortable looks and stellar technology inside and out.
2017 Omega Speedmaster Racing Co-Axial Master Chronometer replaces both it and the Speedmaster Co-Axial Chronograph. The "racing checker" outer scale on the dial periphery and use of bright, orange color on some models is where the "Racing" part of the name comes from. This, again, is an attempt by Omega to focus on the automotive element of the Speedmaster's history as opposed to the "moonwatch" element of the Speedmaster.
The case is still the same 44.25mm-wide size of the outgoing Speemaster Co-Axial Chronograph model, it wears a lot more comfortably thanks to a number refinements. Omega has introduced the Co-Axial Master Chronometer standards which, among other things, mean that the movements bearing this name contain both anti-magnetic parts and are METAS certified. Thus, the caliber 9900 (and 9901 with gold) are the modern Co-Axial Master Chronometer versions of the older and now discontinued caliber 9300.
