The purpose of this page is twofold. One – to provide easy access to general information on this iconic Omega dive watch. Two – to help potential buyers locate pre-owned & new models online. Please support this site by visiting our shopping partners – thank you.

Don’t confuse the Seamaster 300 with the Seamaster Professional Diver 300m or the Seamaster Planet Ocean. A quick glance at any of these models should be time enough to determine which model it is. If BOTH hands have arrowhead pointers – it’s an Omega Planet Ocean. If ONLY the hour hand has the arrowhead it’s the Seamaster 300featured here. The Seamaster Diver 300m is totally different with distinctive skeletal (hollow) hands.

Index

Seamaster 300 – rebirth of a classic

It was 1957 when Omega introduced the Seamaster 300. Designed specifically for divers and underwater professionals. Fast forward another 50 years and Omega have kindly reintroduced the Seamaster 300. Maintaining all the aesthetic qualities of the original Omega have completely upgraded and enhanced this classic watch. Stuffed with new and innovative technical features have ensured the Seamaster 300 is here to equip the next generation of adventurers on land and in the sea.

It was 2014 when Omega released this new version of the Seamaster 300. After several years in production the new MK2 is now available in over 16 different model variants. Available with leather, steel, gold or titanium straps and an equally impressive range of case materials. All models are powered by Omega’s superb Master Coaxial Calibres 8400, 8402 and 8800

Reborn – the Omega Seamaster Master Co-Axial 300

Presented in the perfect case size – 42mm – the Seamaster Master Co-Axial is certified to depths of 300m or a pressure of 30Bar – a true diver’s watch with no compromise and style by the bucket full.

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Counterfeit warning – shoppers must make their own judgement to determine the authenticity of any watch before buying it – avoid buying a fake watch

LIVE feed sales

UK sellers – updated 27th June 2019

>>> more Omega Seamaster 300 watches from UK sellers here


Available online now

Chronodivers.com is an affiliated partner of Amazon.com. Here’s a selection of Omega Watches available now. Please note – these models are not specifically the Seamaster 300 – they are just a sample of the Omega dive watches available from Amazon.com


LIVE feed sales

USA Sellers – updated June 27, 2019

>>> more Omega Seamaster 300 watches from USA sellers here

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Glowing with Super-Luminova

Large triangular numeral markers and hands all encased in super bright Super-Luminova. The all important minute hand glows a different colour to all other hands and markings to help differentiate during essential dive timing in low light conditions

Super-Luminova coatings on hour markers, hands and bezel “0” position

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Master Coaxial Movement

There’s no doubt the Seamaster impresses from the exterior – but it’s inside that the really beauty can be found. Powered by Omega’s Master Coaxial Calibres 8400, 8402 and 8800 movements (model dependent) – the Seamaster excels in mechanical chronometer accuracy.

Calibre 8400

The Omega Calibre 8400 – a Self-winding movement with Co-Axial escapement. It’s resistant to magnetic fields greater than 15,000 gauss. Featuring a free sprung-balance with silicon balance spring, two barrels mounted in series, automatic winding in both directions. The bridges and oscillating weight are both decorated with an exclusive Geneva wave design in arabesque

Calibre 8401

The Omega Calibre 8401 – a Self-winding movement with Co-Axial escapement. Featuring free sprung-balance, 2 barrels mounted in series, automatic winding in both directions. The 8401 stands out with it’s oscillating mass and balance bridge in red gold. Luxury finish with an exclusive Geneva wave design in arabesque

Once fully wound from it’s automatic motion wound movement – the Seamaster will run for 60 hours. If the watch has been off the wrist for some time it can be boosted by manual winding without the need to pull out the crown (sometimes referred to as hacking)

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Video Reviews

OMEGA Seamaster 300 Review

Bruce Williams – Omega Seamaster 300 Review – retro done right

The Omega Seamaster 300 Wristwatch

Nick Shabazz – ” Today, we’re going to take a look at a very interesting dive watch, which is capable in the ocean, but more at home in the board room, the Omega Seamaster 300 Master Coaxial (Ref: 233.30.41.21.01.001) “

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Specification

Movement

Calibre: Omega 8400 self-winding movement with Co-Axial escapement. Resistant to magnetic fields greater than 15,000 gauss. Free sprung-balance with silicon balancespring, two barrels mounted in series, automatic winding in both directions. Bridges and the oscillating weight are decorated with exclusive Geneva waves in arabesque.

Power reserve: 60 hours

Crystal

Domed, scratch-resistant sapphire crystal with anti-reflective treatment inside

Watch Case & Dial

  • Case: Steel
  • Case Diameter: 41 mm
  • Dial Colour: Black

Water Resistance

30 bar (300 metres / 1000 feet)

Features

  • Anti-magnetic
  • Chronometer
  • Liquidmetal™
  • Screw-in crown
  • Transparent case back
  • Unidirectional rotating bezel

Current Models

In the current range of Omega Seamaster 300 watches there are 16 different variations (as of June 2019). The choice of case material covers everything from steel to platinum, titanium and gold. Straps are available in either leather, titanium, gold or steel. There is the choice of Calibre 8400 or 8401 self winding mechanical movements.

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More Omega dive watches

Diver 300

Diver 300m

Seamaster 300

Seamaster 300m

Planet Ocean

Planet Ocean

Proplof

Ploprof 1200m

External references / further reading

Omega Watches.com – all images, specifications and product details