This is your opportunity to own one of the most sought-after sport-luxury watches in the world — the Omega Seamaster Professional Diver 300M in its stunning all-gray "Shades of Grey" configuration. Tried on just a couple of times and never worn in the field, this watch is essentially new in every meaningful sense. It comes complete with its full original presentation box set, international warranty card, Master Chronometer certification card, Pictograms card, operating instructions booklet, and inner reference box — everything exactly as it left the Omega boutique.

The reference is 210.30.42.20.06.002. The dial is a beautifully brushed gray that shifts subtly with the light, paired with a sandblasted, textured unidirectional rotating bezel in the same tonal family — the result is a supremely cohesive, monochromatic aesthetic that has made this specific configuration one of the most coveted in the Seamaster lineup. Applied hour markers and hands are lumed for legibility in all conditions.

The case measures 42mm in diameter with a lug-to-lug span of approximately 47.8mm as measured by digital calipers, and a case thickness of approximately 14mm — substantial and commanding on the wrist, yet comfortable and well-proportioned for most wrist sizes. The stainless steel mesh bracelet is flexible and self-adjusting, conforming naturally to virtually any wrist circumference, making sizing a non-issue.

Powering the watch is the Omega Co-Axial Master Chronometer Caliber 8806 — visible through the exhibition caseback — which is certified by METAS (the Swiss Federal Institute of Metrology) to a precision standard of 0 to +5 seconds per day. It is also certified resistant to magnetic fields exceeding 15,000 gauss, making it one of the most antimagnetic movements available at any price point. Water resistance is rated to 300 meters (1,000 feet), making this a fully capable professional dive watch.

Condition

The watch is in essentially new, unissued condition. The dial, crystal, bezel, case, and bracelet all present as pristine with no signs of wear, scratches, or contact marks. The bezel action is crisp and definitive. The bracelet links show no stretch or distortion. The exhibition caseback reveals a movement that is spotless and untouched. This watch has been tried on for fit purposes only and was never worn daily or exposed to water. Everything included in the original full set is present and in perfect condition. 

Shipping is same day or next day via UPS or FEDEX.

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