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INTRODUCING: The Omega Seamaster Planet Ocean GMT ‘Dark Grey’

The Omega Seamaster Planet Ocean GMT 'Dark Grey' in silicon nitride ceramic case with titanium bezel.

Omega gives the Seamaster Planet Ocean a serious material upgrade with a new titanium movement.

Earlier this year, Omega celebrated the Seamaster’s 75th birthday with a slew of vivid blue watches for the summer. However, it’s not just about new colourways; the latest Seamaster release embraces high-tech materials for a lightweight Planet Ocean in a cool monotone grey. At just 107g (without the strap), the Seamaster Planet Ocean GMT ‘Dark Grey’ has a big footprint with a light touch.

The Omega Seamaster Planet Ocean GMT 'Dark Grey'.
The Omega Seamaster Planet Ocean GMT 'Dark Grey'.

The grey case stems from its silicon nitride ceramic material, which is used in the aerospace industry as it is corrosion-resistant, has a wide temperature range, and works well in the vacuum of outer space. Its glossy, deep grey colour is enhanced by the polished chamfers on the case with brushed sides. This is the first time silicon nitride ceramic is used so generously in a watch, as the patented NAIAD LOCK caseback and bezel insert are also made of the same material.

Silicon nitride ceramic and titanium are used on the different parts of the case and dial, distinguished by their colouring.
Silicon nitride ceramic and titanium are used on the different parts of the case and dial, distinguished by their colouring.

Elsewhere, grade 5 titanium is used on the microblasted dial, bezel, folding clasp, hands, and indexes. The true GMT hand is tipped in an orange arrowhead. But most importantly, it’s also used in the movement. That’s right, the Calibre 8906 Ti that’s fitted in the GMT model has been given an upgrade as well with a titanium mainplate and bridges. The ‘Ti’ suffix highlights the uniqueness of this variation. Utilising titanium on these components makes sense: with its lightness and hardness, it’s ideal for shock resistance and stability.  

The Omega Calibre 8906 Ti, with a titanium mainplate and bridges, housed within the Seamaster Planet Ocean GMT 'Dark Grey'.
The Omega Calibre 8906 Ti, with a titanium mainplate and bridges, housed within the Seamaster Planet Ocean GMT 'Dark Grey'.

While the METAS-certified Calibre 8906 Ti performs just as well as the standard movement, it’s naturally a little lighter. The matte micro-blasted finish in the same deep grey hue as the case is retained across the movement’s rotor, mainplate, bridges, and even the balance to maintain its monochromatic style. The watch is paired with a textured rubber strap in a slightly darker grey. It’s water-resistant to 600m and is sized at 45.5mm.

The caseback of the Omega Seamaster Planet Ocean GMT 'Dark Grey' has a monochromatic look that's just right.
The caseback of the Omega Seamaster Planet Ocean GMT 'Dark Grey' has a monochromatic look that's just right.

The Seamaster Planet Ocean GMT ‘Dark Grey’ is undoubtedly cool – the grey tones are neither too severe nor too dull. It has the presence of a classic black watch without the formality of one. However, its lug-to-lug length may be a challenge for the slimmer wristed at over 51mm long. It’s also pretty thick at 17.4mm. If that’s not an issue, the Seamaster Planet Ocean GMT ‘Dark Grey’ is an excellent buy with its groundbreaking case and movement.  

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Editor

Darren has been writing about, and admiring the craft of watchmaking for over a dozen years. He considers himself lucky to live in a golden age of horology, and firmly believes that the most difficult watches to design are the simplest and the most intriguing to discover.


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