Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey

Reference 231.23.39.21.06.001

Omega Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey

About this watch

The Omega Seamaster Aqua Terra 150M Co-Axial 38.5 is a luxurious timepiece that embodies precision, craftsmanship, and style. This stunning watch boasts an exquisite combination of stainless steel and red gold construction, giving it a luxurious yet durable appeal. The 38.5mm round shape strikes a perfect balance between boldness and subtlety, making it suitable for both men and women. The grey dial is sophisticated and versatile, pairing beautifully with various outfits. The open case back allows you to admire the intricate Omega caliber 8500 movement, which features two barrels providing a robust 60-hour power reserve. This chronometer has undergone rigorous testing to ensure its accuracy, meeting the standards set by the Swiss Official Chronometer Testing Institute (COSC). With a water resistance of 150 meters and an easy-to-read date function, this watch is perfect for daily wear. Its classic design ensures it won't go out of style, making it a timeless addition to any collection. For watch collectors, the Omega Seamaster Aqua Terra 150M Co-Axial 38.5 is a must-have, combining innovative movement, luxury materials, and stunning aesthetic. This remarkable choice offers both functionality and style, standing out among its peers.
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Key Features

  • Omega Caliber 8500 Movement
  • 60-Hour Power Reserve
  • 150M Water Resistance
  • Grey Dial with Stick and Dot Indexes
  • Red Gold Accents on Stainless Steel Case
  • Open Case Back for Visible Movement
  • Chronometer Certified by COSC

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Red Gold / Grey
Reference
231.23.39.21.06.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
38.5mm
Dial Color
Grey
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] 2025 Omega Aqua Terra Worldtimer Titanium 220.92.43.22.99.001 - $9,500

2025 Omega Aqua Terra Worldtimer Titanium 220.92.43.22.99.001 - $9,500

Omega - 220.92.43.22.99.001 · $9,500
The Omega Seamaster Aqua Terra 150M GMT Worldtimer features a 43mm titanium case, brushed black ceramic bezel, and a black and grey dial with a laser-ablated topographic view of Earth. It also includes a 24-hour day/night ring with 24 world cities and is powered by the Co-Axial Master Chronometer Calibre 8938.

  • Condition: Excellent with minimal signs of wear
  • Case material: grade 2 titanium
  • Bezel material: brushed black ceramic
  • Dial description: black and grey with laser-ablated topographic view of Earth from above the North Pole
Posted at
May 19, 2026, 2:10 PM
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[WTS] Omega Seamaster Aqua Terra 41.5mm - 231.10.42.21.02.001 - Price Reduced!

Omega Seamaster Aqua Terra 41.5mm - 231.10.42.21.02.001 - Price Reduced!

Omega - 231.10.42.21.02.001 · $2,895
  • Condition: Very clean pre-owned condition with light wear throughout
  • Size: 41.5mm diameter
Posted at
May 19, 2026, 12:30 PM
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[WTS] Omega Seamaster Aqua Terra 41.5mm "Spectre" Blue - 231.10.42.21.03.003

Omega Seamaster Aqua Terra 41.5mm "Spectre" Blue - 231.10.42.21.03.003

Omega - 231.10.42.21.03.003 · $3,650
This is a watch-only example of the Omega Seamaster Aqua Terra 'Spectre' Blue, featuring a 41.5mm size and blue dial.

  • Condition: Pre-owned, great condition with light wear
  • Size: 41.5mm diameter
  • Bracelet: center links are brushed instead of polished
Posted at
May 19, 2026, 12:26 PM
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[WTS] Omega Seamaster Aqua Terra First Gen 39.2mm Black Dial — Ref. 2503.50.00 | Fresh Service | $2,599 Shipped

Omega Seamaster Aqua Terra First Gen 39.2mm Black Dial — Ref. 2503.50.00 | Fresh Service | $2,599 Shipped

Omega - 2503.50.00 · $2,599
First-generation Omega Seamaster Aqua Terra ref. 2503.50.00, featuring a 39.2mm case and elegant glossy black dial. Powered by the reliable Omega Co-Axial Cal. 2500, this watch represents a perfect balance between dress watch refinement and everyday versatility.

  • Condition: very good condition overall
  • Case size: 39.2mm
  • Lug-to-lug length: ~46mm
  • Thickness: ~11.5mm
Posted at
May 19, 2026, 10:37 AM
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[WTS] Omega Worldtimer Aqua Terra 150m box and papers 43mm $7900+ label

Omega Worldtimer Aqua Terra 150m box and papers 43mm $7900+ label

Omega - Worldtimer Aqua Terra 150m box and papers 43mm · $7,900
This Omega Worldtimer Aqua Terra 150m features a 43mm case size, 60 hour power reserve, integrated 18k gold bracelet, and 150 meter water resistance.

  • Condition: Excellent condition with minor scratches on the bracelet, ripped outer box flap, and taped fix
  • Bracelet size: 43mm
  • Water resistance: 150m
  • Depth rating: 150m depth rating
Posted at
May 18, 2026, 9:24 PM
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[WTS] Omega Seamaster Aqua Terra 2400

Omega Seamaster Aqua Terra 2400

Omega - Aqua Terra 2400
This Omega Seamaster Aqua Terra 2400 is in excellent condition, with a previous owner-reported accuracy of +3 seconds per day. The watch comes with a watch-only bracelet that fits a 7.5-inch wrist.

  • Condition: fantastic condition, super clean and running super well
  • Bracelet size: fits about a 7.5 inch wrist
  • Accuracy: +3 seconds a day
Posted at
May 18, 2026, 5:50 PM
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[WTS] Omega Seamaster Aqua Terra 220.10.41.21.06.001 41mm Automatic Grey Dial Full Set

Omega Seamaster Aqua Terra 220.10.41.21.06.001 41mm Automatic Grey Dial Full Set

Omega - 220.10.41.21.06.001 · $4,995
This Omega Seamaster Aqua Terra features a stainless steel case, grey teak dial, and automatic movement. It comes with an original outer box, inner box, and undated warranty card.

  • Condition: Very good condition
  • Movement type: Automatic
  • Bracelet material: Stainless steel
  • Case size: 41 mm
Posted at
May 18, 2026, 8:49 AM
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[WTS] Omega Aqua Terra Quartz 2517.80 39mm Box and Papers - $1,890

Omega Aqua Terra Quartz 2517.80 39mm Box and Papers - $1,890

Omega - 2517.80 · $1,890
Up for sale is my Omega Seamaster 2517.80, a quartz watch with Calibre Omega 1538 movement and a steel case on original Omega steel bracelet.

  • Condition: great condition, minimal marks on the case and bracelet
  • Case size: 39mm diameter
  • Movement: Calibre Omega 1538 quartz
  • Bracelet type: original Omega steel bracelet
Posted at
May 17, 2026, 9:26 PM
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[WTS] Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial - $2,950

Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial - $2,950

Omega - 231.10.39.21.02.002 · $2,950
Up for sale is my great condition Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial.

  • Condition: Great condition, minimal marks on case and caseback
  • Case Size: 39mm diameter
  • Bracelet Type: Original Omega steel bracelet (replaced with OEM all brushed version)
  • Movement: Calibre OMEGA 8500
Posted at
May 17, 2026, 9:22 PM
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