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

Reference 231.23.39.21.02.001

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

About this watch

The Omega Seamaster Aqua Terra 150M Master Co-Axial is a masterpiece of luxury watchmaking, combining elegance with functionality in a single timepiece. Crafted from a blend of stainless steel and red gold, this stunning watch exudes opulence without being gaudy. The silver-toned dial features stick and dot indexes paired with arrow-shaped hands, providing excellent legibility and making it an ideal companion for both casual and formal occasions. At the heart of this timepiece is the in-house Omega caliber 8500, a marvel of engineering known for its reliability and precision. With a power reserve of 60 hours, you don't have to worry about winding it every day. The Co-Axial escapement improves accuracy and reduces friction between parts, making it a true chronometer. This watch is perfect for professionals who need a timepiece that transitions seamlessly from the office to a dinner date, as well as collectors who appreciate Omega's rich history and innovation.
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Key Features

  • Omega caliber 8500 movement
  • Stainless Steel / Red Gold case material
  • Sapphire crystal glass
  • 150 meters water resistance
  • 38.5 mm diameter
  • Co-Axial escapement for improved accuracy
  • 60 hour power reserve

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Master Co-Axial 38.5 Stainless Steel / Red Gold / Silver
Reference
231.23.39.21.02.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
38.5mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] REDUCED Omega Aqua Terra 38mm Blue Dial – Ref. 220.10.38.20.03.003 – Full Set

REDUCED Omega Aqua Terra 38mm Blue Dial – Ref. 220.10.38.20.03.003 – Full Set

Omega - 220.10.38.20.03.003 · $4,849
A Omega Aqua Terra 38mm watch, featuring a blue shades dial and an Omega Co-Axial Master Chronometer Caliber 8800 movement. It has a stainless steel bracelet with polished center links and is water resistant up to 150 meters.

  • Condition: Excellent overall condition, light signs of wear
  • Case size: 38mm diameter
  • Dial color: blue
  • Movement type: Omega Co-Axial Master Chronometer Caliber 8800
Posted at
Apr 15, 2026, 6:03 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra 231.10.42.21.02.001 - White Teak Automatic

Omega Seamaster Aqua Terra 231.10.42.21.02.001 - White Teak Automatic

Omega - 231.10.42.21.02.001 · $2,895
This Omega Seamaster Aqua Terra is a watch-only example in very clean pre-owned condition, with everything functioning well.

  • Condition: Very clean pre-owned condition with light wear throughout
  • Size: 41.5mm diameter
  • Dial condition: small mark on the dial (in line with the 2 o’clock marker)
Posted at
Apr 15, 2026, 4:46 PM
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View listing on r/WatchExchange
[WTS] 2020 Omega Aqua Terra Captain’s Watch White/silver 6/20 Ref# 231.10.42.21.02.002 $3,599.00

2020 Omega Aqua Terra Captain’s Watch White/silver 6/20 Ref# 231.10.42.21.02.002 $3,599.00

Omega - 231.10.42.21.02.002 · $3,599
A 2020 Omega Aqua Terra Captain's Watch in white and silver, featuring an automatic self-winding movement, 41.5mm case, and 150M water resistance.

  • Condition: fantastic condition with a few minor flaws on the case and box
  • Diameter: 41.5mm
  • Water Resistance: 150m
  • Movement: 8500 Caliber automatic self-winding movement
Posted at
Apr 15, 2026, 12:12 PM
Active
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[WTS] Omega Aqua Terra 41mm Black Lacquer Dial, $5200

Omega Aqua Terra 41mm Black Lacquer Dial, $5200

Omega - 220.10.41.21.01.002 · $5,200
A Omega Aqua Terra with a black lacquer dial, available for sale.

  • Condition: Preowned
  • Shipping: $100 (USA)
  • Payment Methods: Wire,Credit Card
  • Warranty: 2025
Posted at
Apr 15, 2026, 10:30 AM
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[WTS] Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $3,250

Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $3,250

Omega - 231.10.39.21.01.001 · $3,250
Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39.21.01.001.

  • Condition: Very good condition for its age, minimal marks/hairlines on case, caseback, and bracelet
  • Movement: Automatic Omega Calibre 8500
  • Case size: 38.5mm
  • Bracelet material: Steel
Posted at
Apr 15, 2026, 4:35 AM
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[WTS] Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm - $2,650

Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm - $2,650

Omega - 231.10.39 Cal 8500 · $2,650
Up for sale is my Omega Aqua Terra 231.10.39 Cal 8500. This watch measures at 39mm and has an OMEGA 8500 movement.

  • Condition: great condition, minimal marks on the case and bezel
  • Case size: 39mm
  • Movement: Calibre OMEGA 8500
  • Bracelet material: steel
Posted at
Apr 15, 2026, 4:33 AM
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View listing on r/WatchExchange
[WTS] Omega Aqua Terra 2503.30 39mm Champagne Dial Box and Papers - $2,350

Omega Aqua Terra 2503.30 39mm Champagne Dial Box and Papers - $2,350

Omega - 2503.30 · $2,350
Up for sale is my great condition Omega Seamaster 2503.30, measuring at 39mm with an automatic Omega Calibre 2500 movement.

  • Condition: Very good condition for its age with minimal marks/hairlines on the case, caseback, and bracelet
  • Diameter: 39mm
  • Movement: Omega Calibre 2500
Posted at
Apr 15, 2026, 4:25 AM
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[WTS] Omega Seamaster Aqua Terra 150m Master Co-Axial Golf Edition (2020) Complete Kit With Extra Straps 220.12.41.21.01.002

Omega Seamaster Aqua Terra 150m Master Co-Axial Golf Edition (2020) Complete Kit With Extra Straps 220.12.41.21.01.002

Omega - 220.12.41.21.01.002 · $4,500
A fantastic, versatile watch with a sporty edge in the Omega Seamaster Aqua Terra Golf Edition.

  • Condition: Used, excellent condition
  • Case size: 41mm diameter
  • Water resistance: 150m depth rating
  • Movement: Omega Co-Axial Master Chronometer
Posted at
Apr 12, 2026, 2:19 AM
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Omega Aqua Terra 8800 - 38mm - Lacquer Black - 220.10.38.20.01.004 ( new )

Omega Aqua Terra 8800 - 38mm - Lacquer Black - 220.10.38.20.01.004 ( new )

Omega - 220.10.38.20.01.004 · $5,750
Up for sale is a brand new Omega Aqua Terra 8800 38mm with Lacquer Black Dial, reference # 220.10.38.20.01.004.

  • Condition: Brand new
  • Case size: 38mm
  • Movement type: Master Chronometer Movement
Posted at
Apr 3, 2025, 3:15 PM
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