Omega Seamaster Seamaster Master Co-Axial 39.5 Singapore Edition Stainless Steel / White / Alligator

Reference 511.13.40.20.04.002

About this watch

The Omega Seamaster Master Co-Axial 39.5 Singapore Edition is a masterpiece of horology, boasting exceptional craftsmanship and a unique story tied to the vibrant city of Singapore. This limited edition watch combines modern technology with classic design, making it a versatile companion for both formal and casual occasions. The stunning white dial features a glossy finish, stick and dot indexes, and Feuille hands that ensure readability while maintaining a sleek profile. The 39.5 mm stainless steel case strikes a perfect balance between boldness and wearability, paired with an alligator leather strap that enhances its luxurious feel. With a water resistance of up to 60 meters, this watch is more than just a pretty face, handling splashes and brief immersion while maintaining accuracy and performance even in challenging conditions. The Omega Seamaster Master Co-Axial 39.5 Singapore Edition stands tall in the realm of luxury watches, its blend of sophistication, precision, and limited availability making it a worthy addition to any collection.
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Key Features

  • Omega caliber 8800 self-winding movement
  • Co-Axial escapement reducing friction for longevity and reliability
  • 55-hour power reserve
  • Chronometer certified by Swiss Federal Institute of Metrology (METAS)
  • Resistant to magnetic fields up to 15,000 gauss
  • Stainless steel case with sapphire crystal glass
  • 39.5 mm diameter with 20 mm lug width
  • White dial with glossy finish and stick/dot indexes

Specifications

Brand
Omega
Family
Seamaster
Model
Seamaster Master Co-Axial 39.5 Singapore Edition Stainless Steel / White / Alligator
Reference
511.13.40.20.04.002
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 39.5mm
Dial Color
White
Crystal
Sapphire
Water Resistance
60

Current Listings

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This Omega Seamaster Diver 300m Grey is a 2023 model featuring a sleek design and precise timekeeping.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2023
  • Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual, Hang Tag
  • Shipping: Fully insured through Fedex in the USA
Posted at
Feb 10, 2026, 9:38 AM
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[WTS] Omega Seamaster Diver 300M 210.30.42.20.03.001 Blue 2022 Full Set - $4,395

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A 2022 Omega Seamaster Diver 300M Blue is up for sale, featuring a blue dial and a stainless steel case.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2022
  • Contents: Watch, Inner & Outer Box, Card Holder, International Warranty Card, Pictograms Card, Master Chronometer Card, Instructions Manual
Posted at
Feb 10, 2026, 9:35 AM
Active
[WTS] Omega Seamaster Diver 300M 210.32.42.20.03.001 Blue 2022 Full Set - $4,395

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A 2022 Omega Seamaster Diver 300M Blue, featuring a blue dial and a stainless steel case.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2022
  • Shipping Insurance: Fully insured
Posted at
Feb 10, 2026, 9:31 AM
Active
[WTS] Omega Seamaster SMP300 Black Rubber Strap + Deployment Clasp - Medium - 20mm - 032CVZ015752 + 9452.18.83

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This Omega Seamaster SMP300 features a black rubber strap with a deployment clasp and two spring bars.

  • Condition: Fantastic condition
  • Strap width: 20mm
  • Clasp type: Deployment Clasp
Posted at
Feb 10, 2026, 9:25 AM
Active
[WTS] Omega Seamaster Aqua Terra 2023 41mm Grey 220.10.41.21.06.001 Full Set - $5,495

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Up for sale is a Omega Seamaster Aqua Terra Grey, a **Reference**: 220.10.41.21.06.001 from the year 2023.

  • Condition: Excellent condition with minimal signs of wear
  • Case Size: 41mm
  • Water Resistance: 30m
Posted at
Feb 10, 2026, 9:19 AM
Active
[WTS] Omega Seamaster Cosmic – $625 Shipped

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Up for sale is a vintage Swiss-made Omega Seamaster Cosmic powered by a manual wind movement, housed in an approximately 35 × 38mm stainless steel case, and featuring a date complication. The watch shows consistent wear adding to its authentic vintage appeal.

  • Condition: Pre-owned, shows signs of wear consistent with its age
  • Case Size: 35 × 38mm
  • Movement Type: Manual wind
Posted at
Feb 10, 2026, 8:35 AM
Active
[WTS] Omega Seamaster Professional 300M – Ref. 210.32.42.20.03.001 2022 | Full Set | Rubber deployment clasp + UncleStraps Bracelet

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A 2022 Omega Seamaster Professional 300M is being sold as a full set, including a rubber deployment clasp upgrade and paired with an Uncle Straps US1479 bracelet.

  • Condition: Excellent, with some minor marks of use
  • Year: 2022
  • Bracelet: Uncle Straps US1479
  • Price (bracelet): 110 EUR
Posted at
Feb 10, 2026, 8:24 AM
Active
[WTS] Omega Seamaster 166.0279 With Original Bracelet (Serviced) only for 699$ Shipped🚢

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Omega - 166.0279 · $699
A 1984 Omega Seamaster reference 166.0279 featuring a stainless steel case with a 34mm diameter.

  • Condition: good with some hairline scratches and aging on dial
  • Case size: 34mm diameter
  • Bracelet length: 7.2 inches
  • Movement: calibre 1020 (automatic)
Posted at
Feb 10, 2026, 7:47 AM
Active
[WTS] Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

A Omega Seamaster Aqua Terra Master Co-Axial in blue, featuring a 41.5mm case and 7.25 inch bracelet.

  • Case Diameter: 41.5mm
  • Bracelet Length: 7.25"
Posted at
Feb 9, 2026, 9:28 PM
Active