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Pre-Owned Omega Seamaster Planet Ocean GMT 600M Co-Axial AS06480


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The Seamaster 300 line was Omega's response to the Rolex Submariner upon its introduction in 1957.

Featuring a robust steel case with a 300-meter depth rating, a rotating bezel graduated with a dive-timing scale, and a metal bracelet with diver's expansion links, the early Seamaster 300 was not only a functional diver that would go on to see use in Her Majesty's Navy, but arguably one of the handsomest sports watch designs of the past century.

As it evolved, the Omega Seamaster 300 went on to see numerous evolutionary changes — indeed, nearly innumerable variants in a variety of materials and colorways have been produced in the past 60 years. This fact alone has made the Seamaster Professional watches (as they came to be known) more desirable than their Rolex counterparts to a large portion of the collector community — simply because they don't all look exactly the same.

One of the latest additions to the Seamaster lineage is the Planet Ocean. Introduced in 2005, these watches feature a chunkier case design with a broad arrow handset, a new bracelet, a revised design language on the dial, and increased water resistance — no doubt to compete with that of the Rolex Sea-Dweller.

This particular piece, a Reference from the 2020s, is a GMT-equipped model. Housed in a 43.5mm stainless steel case paired to a matching steel bracelet with a signed deployant clasp, it features a sapphire crystal, signed crowns, a helium escape valve (HEV), a bi-directional rotating 24-hour bezel, a gloss black dial with matching broad arrow handset and applied indices, and an exhibition caseback revealing the Master Chronometer-certified Cal. 8906 automatic co-axial movement within.

This piece remains in outstanding condition overall and is accompanied by its full kit!

If the Planet Ocean was good enough for a certain ‘Mr. B' on the silver screen back in 2006, then it's good enough for us!


The case is in outstanding condition overall showing only faint wear from gentle use. Luminous gloss black dial is in as-new condition with matching ‘broad arrow’ handset. Signed crown.

Delivery & Returns

Standard Delivery (Est 1-3 Days) - Free

Our secure shipping service delivers Monday - Saturday between 8:00 a.m. and 6:00 p.m. For security purposes, every delivery requires an adult signature; Mayors does not deliver to P.O. boxes nor third party forwarding services. To find out more about delivery, click here. Tracking information is available upon request.

If you have any questions or concerns regarding your order, Mayors’ E-Commerce team can be reached at 1-800-4-MAYORS (1-800-462-9677), option 1, during the following times (Eastern Time):

- Monday - Saturday: 9:00 a.m. – 7:00 p.m

- Sunday: 9:00 a.m. – 5:00 p.m

- Closed Easter Sunday, Thanksgiving Day and Christmas day

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