Omega Aqua Terra Seamaster Aqua Terra 150M Master Co-Axial Stainless Steel / Red Gold / MOP / Bracelet

Reference 231.20.34.20.55.001

About this watch

The Omega Seamaster Aqua Terra 150M Master Co-Axial is a masterpiece of luxury watchmaking, boasting an elegant design, impressive functionality, and precision. The stunning Mother of Pearl dial shimmers beautifully, reflecting light with a subtle allure. Crafted from a combination of Sedna Gold and stainless steel, the 34mm round case exudes a luxurious feel that's both robust and refined. Notable features include gem-set indexes adding a touch of glamour, arrow-shaped hands ensuring effortless time-telling, and an automatic Omega caliber 8520 movement with Co-Axial escapement reducing friction for long-term accuracy. With a water resistance of 150 meters, this watch can handle the demands of water sports or everyday wear. The sapphire glass provides an extra layer of protection, while the open case back showcases the intricate workings of the movement. Wearing the Aqua Terra is a joy, with its comfortable stainless steel bracelet and secure clasp. This versatile timepiece effortlessly transitions from formal to casual settings, making it the perfect accessory for any occasion.
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Key Features

  • Omega caliber 8520 automatic movement
  • Co-Axial escapement for reduced friction
  • Mother of Pearl (MOP) dial with gem-set indexes

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Master Co-Axial Stainless Steel / Red Gold / MOP / Bracelet
Reference
231.20.34.20.55.001
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
34mm
Dial Color
White
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET! 🔥$10,100🔥

OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET! 🔥$10,100🔥

OMEGA - 220.10.43.22.03.002 · $10,100
A sophisticated travel companion with a 43mm stainless steel case, featuring a dial that captures the essence of a perfect day at sea, showcasing Earth on a grade 5 titanium plate.

  • Condition: VERY GOOD - Some light scratches on case and bracelet.
  • Case size: 43mm
  • Bracelet length: ~7in
Posted at
Feb 8, 2026, 7:36 PM
Active
[WTS] OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET! 🔥$6,300🔥

OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET! 🔥$6,300🔥

The OMEGA Seamaster Aqua Terra Ref. 220.10.38.20.13.003 features a stunning Terracotta dial, symmetrical case design, and polished brushed bracelet.

  • Condition: UNWORN
  • Dial color: Terracotta
  • Case size: 38mm diameter
  • Bracelet length: ~7 inch pre-sized
Posted at
Feb 8, 2026, 7:33 PM
Active
[WTS] Omega Seamaster Aqua Terra 150m | Calibre 8500 Co-Axial | 231.10.39.21.06.001

Omega Seamaster Aqua Terra 150m | Calibre 8500 Co-Axial | 231.10.39.21.06.001

Aqua Terra 150m with Calibre 8500 Co-Axial movement, a 38.5mm case size and a 7.25 inch long bracelet.

  • Case size: 38.5mm
  • Bracelet length: 7.25 inches
Posted at
Feb 8, 2026, 1:09 PM
Active
[WTS] Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

This Omega Seamaster Aqua Terra Master Co-Axial features a blue dial and a 41.5mm case.

  • Case Diameter: 41.5mm
  • Bracelet Length: 7.25"
  • Accepted Payment Methods: Zelle, PayPal, or Western Union
Posted at
Feb 8, 2026, 1:00 PM
Active
[WTS] Omega Seamaster Aqua Terra Worldtimer | Ref. 220.12.43.22.03.001 | 2024 | Full Set | Like New

Omega Seamaster Aqua Terra Worldtimer | Ref. 220.12.43.22.03.001 | 2024 | Full Set | Like New

This Omega Seamaster Aqua Terra Worldtimer features a striking blue dial with a laser-ablated globe at the center, surrounded by 24-hour and global city rings for simultaneous reading of time zones worldwide.

  • Condition: Like New
  • Case size: 43mm diameter
  • Dial color: blue
  • Water resistance: 150m depth rating
Posted at
Feb 7, 2026, 1:12 AM
Active
[WTS] Omega Seamaster Aqua Terra 150M “Spectre” Blue Dial – 41.5mm Ref: 231.10.42.21.03.003 Full Set 2020 Mint Condition

Omega Seamaster Aqua Terra 150M “Spectre” Blue Dial – 41.5mm Ref: 231.10.42.21.03.003 Full Set 2020 Mint Condition

This Aqua Terra 'Spectre' configuration features a strong 41.5mm case with a blue teak dial, powered by the reliable in-house Calibre 8500. It's suitable for daily wear and offers excellent magnetic resistance.

  • Condition: Excellent condition
  • Dial color: blue
  • Case size: 41.5mm
  • Water resistance: 150m
Posted at
Feb 6, 2026, 10:19 PM
Active
[wts] 2021 OMEGA SEAMASTER AQUA TERRA 150M
220.10.43.22.03.001

2021 OMEGA SEAMASTER AQUA TERRA 150M 220.10.43.22.03.001

This 2021 Omega Seamaster Aqua Terra features a 43mm stainless steel case, blue dial, and Calibre 8938 movement with a 60-hour power reserve. It has a water resistance of 150 meters.

  • Condition: Pre-owned, cosmetic condition: 9/10, fully functional
  • Case size: 43mm
  • Movement: Calibre 8938
  • Power reserve: 60 hours
Posted at
Feb 6, 2026, 6:35 PM
Active
[WTS] Omega Seamaster Aqua Terra 38 Green 220.12.38.20.10.001 MINT REDUCED

Omega Seamaster Aqua Terra 38 Green 220.12.38.20.10.001 MINT REDUCED

This Omega Seamaster Aqua Terra 38 Green is a high-end watch in mint condition, complete with box and papers.

  • Condition: Mint
  • Water Resistance: 30m
Posted at
Feb 6, 2026, 1:50 PM
Active
[WTS] Omega Seamaster Aqua Terra Day Date, Blue dial.

Omega Seamaster Aqua Terra Day Date, Blue dial.

This Omega Seamaster Aqua Terra Day Date features a blue dial and is one of the seller's daily wear pieces. It comes with original box, strap, and clasp.

  • Condition: pre-owned with minor wear (micro hairline)
  • Original Box: true
  • Strap Condition: original
  • Case Size: 40mm diameter
Posted at
Feb 5, 2026, 8:21 PM
Active