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

Reference 231.20.39.21.02.001

About this watch

The Omega Seamaster Aqua Terra 150m Master Co-Axial is a marvel of Swiss watchmaking, offering an exquisite blend of style and performance. Its stunning stainless steel and red gold case strikes a perfect balance between boldness and wearability, while the silver dial features stick and dot indexes for clean readability. The in-house caliber 8500 movement, featuring a Co-Axial escapement, reduces friction and enhances precision, making it a reliable companion for those who lead active lifestyles. With a water resistance of 150 meters and a certified chronometer status, this timepiece is designed to keep impeccable time while withstanding the rigors of everyday wear. Whether you're in the boardroom or on the beach, this watch is sure to catch eyes and reflect your taste for quality. Its blend of elegance and functionality makes it perfect for anyone who values style and precision.
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Key Features

  • Stainless Steel and Red Gold Case
  • In-House Caliber 8500 Movement
  • 150m Water Resistance
  • Certified Chronometer Status
  • Sapphire Glass
  • 38.50mm Diameter
  • 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 / Bracelet
Reference
231.20.39.21.02.001
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] 2021 Omega Aqua Terra Ref# 220.12.41.21.02.001

2021 Omega Aqua Terra Ref# 220.12.41.21.02.001

The Omega Aqua Terra is a versatile watch with a 41mm case, silver dial with teak pattern, and orange accents. It's powered by an in-house Co-Axial Master Chronometer movement delivering exceptional accuracy and anti-magnetic resistance.

  • Condition: Good, professionally polished April 2026
  • Year: 2021
  • Size: 41mm diameter
  • Power reserve: 60 hours
Posted at
Apr 28, 2026, 4:37 PM
Active
[WTS] Omega Seamaster Aqua Terra Skyfall 231.10.39 38.5mm - $3,250

Omega Seamaster Aqua Terra Skyfall 231.10.39 38.5mm - $3,250

Up for sale is my great condition Omega Seamaster Aqua Terra 'Skyfall' with a Calibre OMEGA 8500 automatic movement and a steel case.

  • Condition: Great condition, minimal marks/hairlines on the case back and some smudging/scratches present on the AR coating
  • Case size: 39mm diameter
  • Movement type: Calibre OMEGA 8500 automatic
  • Bracelet type: original steel Omega steel bracelet
Posted at
Apr 27, 2026, 9:04 PM
Active
[WTS] Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm  - $2,890

Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $2,890

Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39.21.01.001, measuring at 38.5mm with an automatic Omega Calibre 8500 movement.

  • Condition: Very good condition for its age, with minimal marks/hairlines
  • Movement: Omega Calibre 8500
  • Case size: 38.5mm diameter
  • Bracelet: Original Omega steel bracelet
Posted at
Apr 27, 2026, 8:58 PM
Active
[WTS] Omega Aqua Terra 38.5MM 231.10.39.21.02.001 | 2017 Full Set reserved for u/Icy-Mastodon7192

Omega Aqua Terra 38.5MM 231.10.39.21.02.001 | 2017 Full Set reserved for u/Icy-Mastodon7192

This Omega Aqua Terra is a full set from 2017, featuring a 38.5MM case.

  • Condition: Excellent Pre-Owned Condition
  • Case diameter: 38.5MM
Posted at
Apr 27, 2026, 7:48 PM
Active
[WTS] Omega Seamaster Aqua Terra 220.10.41.21.06.001 Grey Dial Full Set

Omega Seamaster Aqua Terra 220.10.41.21.06.001 Grey Dial Full Set

The Omega Seamaster Aqua Terra Ref. 220.10.41.21.06.001 is a stainless steel watch with a grey teak dial and automatic movement, featuring a 41 mm case.

  • Condition: Very good
  • Case size: 41 mm
  • Material: stainless steel
  • Bracelet: stainless steel bracelet
Posted at
Apr 27, 2026, 1:44 PM
Active
[WTS] Omega Aqua Terra 39mm Automatic

Omega Aqua Terra 39mm Automatic

Omega - 2503.80 · $2,400
Up for sale is my Omega Aqua Terra 39mm Automatic watch, which sports a stunning blue dial and beautifully polished indices.

  • Condition: Great condition
  • Diameter: 39mm
Posted at
Apr 27, 2026, 10:28 AM
Active
[WTS] Omega Seamaster Aqua Terra 2503.33  - $2,750

Omega Seamaster Aqua Terra 2503.33 - $2,750

Omega - 2503.33 · $2,750
Up for sale is the Omega Seamaster Aqua Terra 2503.33, measuring 39mm and featuring an automatic movement.

  • Condition: Very good condition
  • Case size: 39mm diameter
  • Movement type: Omega 2500 automatic
  • Bracelet material: Steel
Posted at
Apr 26, 2026, 10:02 PM
Active
[WTS] Omega Seamaster Aqua Terra 2504.50 36mm - $2,490

Omega Seamaster Aqua Terra 2504.50 36mm - $2,490

Omega - 2504.50 · $2,490
This watch measures 36mm and has an automatic movement. The Omega Seamaster Aqua Terra features a steel case on an original Omega Steel bracelet.

  • Condition: 8.9/10 great condition with minimal patina on dial indices and hands
  • Case size: 36mm diameter
  • Bracelet type: Steel original Omega bracelet
  • Crystal type: Sapphire crystal
Posted at
Apr 26, 2026, 9:59 PM
Active
[WTS] Omega Aqua Terra 38.5mm Blue Dial

Omega Aqua Terra 38.5mm Blue Dial

The Omega Aqua Terra features a dark blue dial with vertical teak pattern and measures 38.5mm in diameter, with a lug width of 19mm and thickness of 12.84mm.

  • Condition: Good condition
  • Case Diameter: 38.5 mm
  • Lug Width: 19 mm
  • Thickness: 12.84 mm
Posted at
Apr 26, 2026, 5:45 PM
Active