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

Reference 511.13.40.20.04.002

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

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

Current Listings

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Omega - 210.30.42.20.01.018 · $5,500

A 2023 Omega Seamaster Professional Diver 300M with an automatic self-winding movement and a black dial with orange accents.

Condition: Fairly new, minimal wear
Movement: Omega 8806 Automatic Self Winding w/ Hacking
Power reserve: 55 hours
Dial color: Black with orange accents

Posted at

Apr 7, 2026, 8:36 AM

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[US] Omega Seamaster SMP300 - Silver Dial - 42mm - 210.30.42.20.06.001

Omega - 210.30.42.20.06.001 · $3,675

This Omega Seamaster SMP300 features a 42mm silver dial and is in excellent working order.

Condition: Fantastic condition with minor hairlines
Case size: 42mm
Diameter: 42mm

Posted at

Apr 7, 2026, 7:57 AM

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(Serviced) Omega Seamaster Planet Ocean Black 232.30.46.21.01.003 $2900

Omega - 232.30.46.21.01.003 · $2,900

A black Omega Seamaster Planet Ocean with a rich history of being bought and sold on this forum. The watch is in amazing condition and was barely worn since its last service.

Condition: like new, recently serviced
Previous owner's sales history: over 100 sales
Face to face sale requirement: FaceTime is required for the sale

Posted at

Apr 6, 2026, 10:41 PM

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Omega Seamaster 300 Master Co-Axial Titanium Blue Dial 233.90.41.21.03.001 Full Kit $4,650

Omega - 233.90.41.21.03.001 · $4,650

Up for sale is an Omega Seamaster 300 Master Co-Axial in titanium with a blue sandwich dial, featuring an automatic movement and a 300m water resistance.

Condition: Excellent condition with minimal signs of wear
Case size: 41mm
Movement: Omega Master Co-Axial Caliber 8400 automatic movement
Water resistance: 300m

Posted at

Apr 6, 2026, 10:07 PM

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Omega Seamaster 300M 210.30.42 Blue Dial 42mm - $3,450

Omega - 210.30.42 · $3,450

Up for sale is my Omega Seamaster Blue dial 210.30.42, measuring at 42mm with an automatic Calibre Omega 8800 movement.

Condition: great condition, 8.9/10 exterior
Movement: automatic Calibre Omega 8800
Case size: 42mm diameter
Case material: steel

Posted at

Apr 6, 2026, 9:45 PM

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Omega Seamaster ref. 2561.80, Box, Strap, Accessories - $1,700

Omega - 2561.80 · $1,700

A midsize Omega Seamaster quartz watch in 36mm with a 6.75" wrist size and extra links for adjustment.

Condition: Vintage, with marks of use consistent with use
Case size: 36mm diameter
Bracelet length: ~6.75"
Links included: yes

Posted at

Apr 6, 2026, 9:42 PM

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Omega Seamaster 300m Professional Black Ceramic 210.30.42.20.01.001

Omega - 210.30.42.20.01.001 · $4,150

This Omega Seamaster 300m Professional features a black ceramic case, comes with both OEM bracelet and rubber strap, and is accompanied by box and papers.

Condition: Pre-owned with minor scratches
Case Material: black ceramic
Bracelet: OEM
Strap: rubber

Posted at

Apr 6, 2026, 8:12 PM

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Omega Seamaster Aqua Terra 231.10.42.21.02.001 - Price Reduced!

Omega - 231.10.42.21.02.001 · $2,895

This is a Watch-only example of the Omega Seamaster Aqua Terra in White Dial, model number 231.10.42.21.02.001, featuring a 41.5mm size and excellent condition.

Condition: Very clean pre-owned condition with light wear throughout.
Size: 41.5mm

Posted at

Apr 6, 2026, 6:21 PM

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