Omega Seamaster Seamaster Master Co-Axial 39.5 Hong Kong Edition Stainless Steel / Red / Alligator

Reference 511.13.40.20.11.001

Omega Seamaster Master Co-Axial 39.5 Hong Kong Edition Stainless Steel / Red / Alligator

About this watch

The Omega Seamaster Master Co-Axial 39.5 Hong Kong Edition is a masterpiece of horological innovation. This stunning timepiece boasts a vibrant red dial, paired with an elegant alligator leather strap and a durable stainless steel case. The Omega Caliber 8800 self-winding movement is a marvel of engineering, featuring a Co-Axial escapement that reduces friction and enhances accuracy. Certified as a Master Chronometer by METAS, this watch is resistant to magnetic fields up to 15,000 gauss. With a power reserve of 55 hours and water resistance of 60 meters, it's perfect for everyday wear and special occasions. The limited production run of only 399 units makes it a highly sought-after collector's piece.
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Key Features

  • Self-winding Omega Caliber 8800 movement
  • Co-Axial escapement for improved accuracy
  • Master Chronometer certification by METAS
  • Water resistance up to 60 meters
  • Power reserve of 55 hours
  • Stainless steel case with durable design
  • Scratch-resistant sapphire crystal
  • Elegant alligator leather strap

Specifications

Brand
Omega
Family
Seamaster
Model
Seamaster Master Co-Axial 39.5 Hong Kong Edition Stainless Steel / Red / Alligator
Reference
511.13.40.20.11.001
Movement
8800
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 39.5mm
Dial Color
Red
Crystal
Sapphire
Water Resistance
60

Current Listings

[WTS] Omega Seamaster Diver 300M Grey Dial | Ref. 210.32.42.20.06.001

Omega Seamaster Diver 300M Grey Dial | Ref. 210.32.42.20.06.001

Omega - 210.32.42.20.06.001 · $4,100
This Omega Seamaster Diver 300M features a grey laser-engraved wave dial paired with a ceramic bezel, and is powered by the Omega Co-Axial Master Chronometer movement.

  • Condition: Very good condition, showing normal signs of wear consistent with careful use.
  • Case size: 42mm diameter
  • Dial color: Grey
  • Bezel material: Ceramic
Posted at
Apr 28, 2026, 9:16 PM
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[WTS] Omega Seamaster 300M Co-Axial Mid-size 36mm 2222.80 Box and Papers - $2,450

Omega Seamaster 300M Co-Axial Mid-size 36mm 2222.80 Box and Papers - $2,450

Omega - 2222.80 · $2,450
Up for sale is my great condition Omega Seamaster 2222.80, this watch measures at 36mm and has an automatic co-axial cal 2500 movement.

  • Condition: 8.9/10 great condition with minimal marks and hairlines
  • Movement: co-axial cal 2500
  • Case size: 36mm
  • Bracelet type: original Omega steel bracelet
Posted at
Apr 28, 2026, 8:58 PM
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[WTS] Omega Seamaster Railmaster

Omega Seamaster Railmaster

Omega - 235.12.38.20.06.001 · $4,400
A beautiful Omega Seamaster Railmaster in overall good condition, known for its highly legible dial and everyday versatility.

  • Condition: Good condition with some normal wear on the case
  • Size: 38mm diameter
  • Movement: Co-Axial 8806
Posted at
Apr 28, 2026, 8:51 PM
Active
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[WTS] Omega Seamaster Railmaster, Grey/Silver, 40mm (full set- box and papers)

Omega Seamaster Railmaster, Grey/Silver, 40mm (full set- box and papers)

Omega - Railmaster · $2,999
A stealth ultimate tool watch with classic looks that cleans up very nice, has a sleek and sporty design.

  • Condition: Excellent, pre-owned
  • Case size: 40mm
  • Year bought: 2025
Posted at
Apr 28, 2026, 7:28 PM
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[WTS] Omega Seamaster 2551.80 (Midsize Automatic) - Price Reduced

Omega Seamaster 2551.80 (Midsize Automatic) - Price Reduced

Omega - 2551.80 · $1,975
A midsize Omega Seamaster Professional sold as watch only, with fantastic patina and a timegrapher reading showing the watch is running great.

  • Condition: pre-owned, worn
  • Wrist size: refer to photo for accurate measurement
Posted at
Apr 28, 2026, 5:32 PM
Active
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[WTS] Omega Seamaster 300m Ceramic 210.92.44.20.01.001 Mint

Omega Seamaster 300m Ceramic 210.92.44.20.01.001 Mint

Omega - 210.92.44.20.01.001 · $5,500
For sale is a mint condition Omega Seamaster Diver 300m in black ceramic, delivered as a fully complete set with all box, books, tag, and warranty card.

  • Condition: Mint condition
  • Materials: Black ceramic case
  • Water Resistance: 300m
Posted at
Apr 28, 2026, 5:21 PM
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[WTS] Omega Seamaster Aqua Terra 39mm. Box & paper

Omega Seamaster Aqua Terra 39mm. Box & paper

Omega - 2503.30.00 · $2,700
A super clean Omega Seamaster Aqua Terra 150M in the highly desirable 39.2mm case size, featuring a stunning sunray silver dial and chronometer-certified Calibre 2500 Co-Axial movement.

  • Condition: Excellent
  • Case Diameter: 39.2mm
  • Water Resistance: 150m (500ft)
  • Power Reserve: 48 hours
Posted at
Apr 28, 2026, 4:59 PM
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[WTS] 2023 Omega Seamaster SMP300m Green Wave Dial “Seaweed” Reference 210.32.42.20.10.001 - Box and Papers

2023 Omega Seamaster SMP300m Green Wave Dial “Seaweed” Reference 210.32.42.20.10.001 - Box and Papers

Omega - 210.32.42.20.10.001 · $4,727
2023 Omega Seamaster Diver SMP300M 42mm Green Wave Dial 'Seaweed' timepiece in excellent condition, with minimal signs of wear and running great.

  • Condition: Excellent
  • Case size: 42mm diameter
  • Depth rating: 300m
Posted at
Apr 28, 2026, 2:32 PM
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[WTS] Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2020

Omega Seamaster Diver 300m Black Dial Steel No Wave Reference 212.30.41.20.01.003 Box and Card dated 2020

Omega - 212.30.41.20.01.003 · $3,477
A black dial Omega Seamaster Diver 300m in excellent condition, featuring a 41mm case and a clean sapphire crystal.

  • Condition: Excellent
  • Water Resistance: 300m
  • Case Size: 41mm
Posted at
Apr 28, 2026, 2:24 PM
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View listing on r/WatchExchange