OMEGA Seamaster 300 MASTER Co-Axial [cutting edge classic]

By TLex In 1957, OMEGA introduced a new watch, designed specifically for divers and professionals that worked underwater. That watch was the Seamaster 300. It was fitted with a unidirectional rotational bezel with a dive-time scale, which along with the combination of a clean black dial, lightly colored hour markers and large hands and numbers, made it possible for divers to read the time in different of light conditions whether they were on land or below the surface of the sea.



It was considered to be one of Omega's most iconic and important dive watches, and one that has stood the test of time in terms of its aesthetic. After more than half a century it is finally back! Introducing the new Seamaster 300 Master Co-Axial - not only Omega's cleanest, purist and most classically styled diver, but probably one of the most technically advanced Seamasters we have ever seen; boasting a veritable 'whose who' of Omega's most cutting-edge innovations in watch-making.



From an impressive selection of metallic case materials that include: Stainless steel, 950 Platinum, Grade 5 Titanium and 18K Sedna™ Gold - to the materials used to aesthetically enhance and prolong the life of the watch and its components: such as the ceramic used for the SM 300's dial or the Liquidmetal® or Ceragold™ that Omega have used for its dive-time scale. 

As well as classic Stainless steel the 41mm Seamaster 300 is available in: 950 Platinum, Grade 5 Titanium and 18K Sedna™ Gold. There are also two-tone variants that team Grade 5 Titanium and 18K Sedna™ Gold or Stainless steel and 18K Sedna™ Gold. The cases are each fitted with vintage-style domed Sapphire crystals and are water-resistant to 300 meters.



The Seamaster 300 features a black ceramic dial with transferred dial elements that are made using a combination of Gold and Palladium. The white gold color is enhanced by a patented process that involves a high temperature treatment; the curving contour of the indexes is created by using an enamel under-layer. 

The 18K White Gold central hour, minute and seconds hands are each coated with vintage-style SuperLumiNova. The hour and seconds hands emit a blue light as do the recessed hour markers. The minute hand is also applied with SuperLumiNova but emits a green light, so that it can be easily distinguishable from the hour hand.



The Stainless steel SM 300 features a sand-blasted black dial which complements the polished black ceramic bezel inlay decorated with its Liquidmetal® dive-time scale. Recessed hour markers are coated with vintage-style SuperLumiNova which emit a blue light as do the rhodium-plated hour and seconds hands; the minute hand and the dot on the bezel are coated with SuperLumiNova that emits a green light. 



The Seamaster 300 is powered by two new high-quality mechanical movements. The Master Co-Axial caliber 8400 and 8401 that not only boast the same accuracy, precision and reliability as their Co-Axial predecessors but also feature Omega's revolutionary anti-magnetic technology, ensuring that they can resist magnetic fields greater than 15,000 gauss (1.5 tesla).



The SM 300's caseback is engraved with 'Si14, ANTI-MAGNETIC > 15’000 GAUSS' and, depending on which alloy the dive-time scale is made of, either 'Liquidmetal®' or 'Omega Ceragold™'. A domed scratch-resistant Sapphire crystal allows an unobstructed view of the movement inside. The Master Co-Axial caliber 8400 equips the two-tone, Stainless steel and Grade 5 Titanium models while the Master Co-Axial caliber 8401, with its special high-end finish, powers the models constructed from 18K Sedna™ gold and 950 platinum.



The SM 300's bracelet is made using OMEGA’s patented rack-and-pusher clasp, which is adjustable to six different positions making it possible for the watch to fit over the sleeve of a divers wetsuit. The bracelet is adjusted by releasing the clasp, pressing the push button and sliding the inner clasp to the desired fit.