Omega Planet Ocean 600m Co-Axial Master Chronometer GMT Review

Dive deep into a review of the Omega Planet Ocean 600m Co-Axial Master Chronometer GMT. Get your flippers on because we're about to get wet!

Omega Planet Ocean 600m Co-Axial Master Chronometer GMT Review

Omega has been adding more of the deep black editions ever since the advent and success of the Speedmaster Dark Side of The Moon series. The appeal of this more modern design coupled with feature-rich watches allows Omega to push their way to the forefront of the market and offer watches that are both highly advanced in terms of their mechanics but also up-to-the-minute and current in terms of their design.

The Seamaster Planet Ocean 600m Co-Axial Master Chronometer GMT was released after Basel 2016 and is a great example when Omega creates a watch that can serve multiple purposes all the while looking great.

There is no shortage of available diving watches and definitely, no shortage of GMT watches out there ...even ones made by Omega. However, Omega decided to make something that would look and work great on your wrist when dry or soaking wet and offer a little more for your money to people considering the purchase of watches with similar features from their competitors.

Key Features

  • The screwed-down ceramic case back called the new Naiad Lock system
  • Transparent case back is water-resistant up to 600m and antimagnetic to 1.5 tesla / 15,000 gauss
  • Master Chronometer and COSC chronometer designations (discussed in detail below)
  • Date window at the 3 o'clock position
  • GMT complication which provides the time in an additional time zone
  • Excellent luminescence for maximum visibility in poor light conditions
Lume and Luminescent material

Mechanical Pedigree

Master Chronometer is a designation that has been making its way into many Omega watches over the last few years. The term means that Omega has made several steps in order to maximize the accuracy and reliability of the caliber. A COSC certification implies that the watch has a mechanical accuracy of -4/+6 seconds per day.

Once the movement receives a COSC certification, it then goes on to another lab, this time at the Swiss Federal Institute of Metrology (known as METAS) and after further testing in the areas of water resistance, magnetic resistance, and exceptional performance and reliability, it receives the "MASTER CHRONOMETER" designation. A caliber that is a Master Chronometer has to achieve a minimum accuracy score of -0/+5 seconds per day.  For a more detailed report on METAS testing for the Master Chronometer, please read our article that discusses it in detail.

Caliber 8906 Automatic Movement

The mechanical movement used in this watch is the Omega 8906 which has the following features:

Omega Caliber 8906 Automatic Movement
  • In-house caliber (made by Omega)
  • COSC Chronometer Certification
  • METAS Chronometer certification for its performance
  • Resonates at 25'200 VPH / beats per hour / 3.5Hz
  • Co-Axial escapement requires less frequent servicing
  • Anti-magnetic movement which uses Omega's Si14 silicon balance spring which is also highly shock resistant enhancing the watch's reliability
  • Arabesque wave design finish on the bridges and rotor
  • 60-hour power reserve

Case Features

  • The ceramic case that is both brushed and polished in certain areas in order to simulate the look of metal while offering the scratch resistance of ceramic
  • Most watches that are non-magnetic have an antimagnetic plate protecting from the movement and therefore don't offer a transparent case back. This watch, however, has a movement which itself which can resist magnetic fields up to 15,000 gauss. This allows for a window to see the beauty of the movement
  • The Deep Black case has a very similar look to the Speedmaster Dark-Side-Of-The-Moon cases
  • The slightly domed scratch-resistant sapphire crystal has an anti-reflective coating on both sides
  • 5 mm case size which thanks to its design doesn't look oversized when worn on the wrist
  • Vulcanized rubber bezel at the 15-minute scale zone
  • Helium escape valve at the 10 o'clock position
case and strap

Dial Specifications

  • Matte black ceramic dial engraved with Zr02 (zirconium oxide) above the 6 o'clock position
  • White gold hour, minutes, and seconds hands which use a brushed finish which have a green-hued luminescent emission
  • White gold index hour markers with luminous fill that emits a blue-hued luminescence
  • Arabic numerals in Blue for the 6,9, and 12 o'clock hour indices
  • Blue arrow-shaped GMT hand behind the hour and minute hands to match the blue case accents has luminescent tips

Strap Options

The strap that comes with this watch is made of deep black rubber with a weave texture and blue stitching to match the blue accents on the case. The rubber watchband closes by way of a push-button deployant buckle. Omega also manufactures NATO straps which can allow you to create all sorts of looks for your watch. These are add-ons that can usually be purchased at Omega's boutiques.

Style Options

In addition to this stunning blue style which has blue accents on the case, blue stitching on the rubber strap, there are several other styles that come with a rubber strap. There is also a higher-end version with 18kt Sedna (rose gold) accents and a leather strap.

Browse Collection

The BLUE version is model #: DEEP BLACK

The ALL-BLACK version is model #: DEEP BLACK

A RED version is model #: DEEP BLACK

The RED and BLUE Version called the Emirates Team New Zealand edition is model #: ETNZ Deep Black

Specifications for the various watches in this series below
Style: Black Black & Blue Black & Red Black,  Red & Blue
Series: Planet Ocean 600m Co-Axial Master Chronometer GMT 45.5mm Planet Ocean 600m Co-Axial Master Chronometer GMT 45.5mm Planet Ocean 600m Co-Axial Master Chronometer GMT 45.5mm Planet Ocean 600m Co-Axial Master Chronometer GMT 45.5mm
Model #:
Size: Men's Men's Men's Men's
Case Material: Ceramic Ceramic Ceramic Ceramic
Dial Color: Black Black Black Black
Bracelet/Strap: Black Rubber with White Stitching Black Rubber with Blue Stitching and Blue Edge Black Rubber with Red Stitching & Red Edge Black Rubber with Red Stitching and Blue Edge
Clasp Type: Push Button Deployant Buckle Push Button Deployant Buckle Push Button Deployant Buckle Push Button Deployant Buckle
Movement: Automatic Automatic Automatic Automatic
Bezel: Uni-Directional Rotating Uni-Directional Rotating Uni-Directional Rotating Uni-Directional Rotating
Crystal: Scratch Resistant Sapphire Scratch Resistant Sapphire Scratch Resistant Sapphire Scratch Resistant Sapphire
Case Back: Transparent Transparent Transparent Transparent
Water Resistance: 600m/2000ft 600m/2000ft 600m/2000ft 600m/2000ft
Case Diameter: 45.5mm 45.5mm 45.5mm 45.5mm
Case Thickness: 17.60mm 17.60mm 17.60mm 17.60mm
Complications: GMT Time Zone GMT Time Zone GMT Time Zone GMT Time Zone

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