Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 34 Stainless Steel / Diamond / MOP

Reference 231.18.34.20.55.001

About this watch

The Omega Seamaster Aqua Terra 231.18.34.20.55.001 is a masterpiece of luxury watchmaking, blending elegance with precision in a stunning package. Crafted from stainless steel and adorned with diamond accents, this 34mm timepiece exudes sophistication and refinement. The Mother of Pearl dial shines with an iridescent quality, while the gem-set indexes add a luxurious touch. Powered by the Omega caliber 8521 movement, this watch boasts accurate timekeeping and a remarkable power reserve of 50 hours. With its robust stainless steel case and scratch-resistant sapphire crystal, it's built to withstand the elements. Whether you're swimming, snorkeling, or just enjoying everyday wear, this Aqua Terra is the perfect companion. Its versatile design effortlessly transitions from casual to formal occasions, making it a staple in any wardrobe.
Buy Now on Jomashop
This is an affiliate link

Key Features

  • Omega caliber 8521 movement
  • Mother of Pearl dial with gem-set indexes
  • Water resistance up to 150 meters
  • Automatic winding and Co-Axial escapement for accurate timekeeping
  • Scratch-resistant sapphire crystal
  • Robust stainless steel case
  • 50-hour power reserve

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Co-Axial 34 Stainless Steel / Diamond / MOP
Reference
231.18.34.20.55.001
Movement
8521
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 34mm
Dial Color
White
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] 2025 Full Kit. Omega Seamaster Aqua Terra Co-Axial GMT 231.10.43.22.01.001

2025 Full Kit. Omega Seamaster Aqua Terra Co-Axial GMT 231.10.43.22.01.001

Beautiful Aqua Terra GMT, a luxury watch featuring a co-axial movement and GMT functionality.

  • Warranty: 5 year warranty dated February 2025
  • Box And Papers: true
Posted at
Dec 7, 2025, 5:44 PM
Active
[WTS] Omega Aqua Terra 36mm Great condition.

Omega Aqua Terra 36mm Great condition.

Omega - Aqua Terra 36mm · $3,600
This Omega Aqua Terra 36mm is in great condition and comes with its original box, paper, booklets, and eBay authentication. It also features an upgraded Omega clasp and two aftermarket President and Forstner flat link bracelets that have been tested to fit.

  • Condition: Great condition
  • Bracelet options: 2 (Original and aftermarket)
  • Box and paper included: yes
Posted at
Dec 6, 2025, 8:53 PM
Active
[WTS] REDUCED PRICE REPOST Omega Seamaster Aqua Terra 36mm 2504.50 Black Dial Full Set W/ Box & Papers

REDUCED PRICE REPOST Omega Seamaster Aqua Terra 36mm 2504.50 Black Dial Full Set W/ Box & Papers

Omega - 2504.50 · $3,150
Up for sale is my Omega Seamaster Aqua Terra 36mm, a full set watch with inner/outer boxes and authentication cards.

  • Condition: very good overall condition with minor hairlines on the bracelet and case
  • Case size: 36mm
  • Box papers included: yes
Posted at
Dec 6, 2025, 8:12 PM
Active
[WTS] Omega Seamaster Aqua Terra - Silver Wave - 2024

Omega Seamaster Aqua Terra - Silver Wave - 2024

Omega - 23110422102006 · $4,350
Aqua Terra 'wave dial' watch features a 41.5mm stainless steel case, silver wave-patterned dial with rhodium-plated hands and indexes, and is powered by the Omega Master Co-Axial Calibre 8500.

  • Case size: 41.5mm
  • Bracelet material: stainless steel
  • Movement type: Omega Master Co-Axial Calibre 8500
Posted at
Dec 6, 2025, 4:52 PM
Active
[WTS] Omega Seamaster Aqua Terra Gold Bezel White “Teak” Dial - 231.23.39.21.02.002 Papers and Travel Box - Excellent Condition

Omega Seamaster Aqua Terra Gold Bezel White “Teak” Dial - 231.23.39.21.02.002 Papers and Travel Box - Excellent Condition

The Omega Seamaster Aqua Terra features a vertical 'Teak-Concept' dial, inspired by luxury sailboats, paired with an 18K yellow gold bezel, giving it a warm and refined look.

  • Condition: Excellent Condition
  • Case size: 38.5mm
  • Water resistance: 150M
  • Movement type: Master Co-Axial Chronometer
Posted at
Dec 6, 2025, 3:11 PM
Active
[WTS] 2025 Omega Seamaster Aqua Terra Shades Lavender Dial 220.10.38.20.10.004

2025 Omega Seamaster Aqua Terra Shades Lavender Dial 220.10.38.20.10.004

This Omega Seamaster Aqua Terra features a 38mm case, Co-Axial Master Chronometer calibre 8800 movement, and comes in a full set including inner/outer box and papers.

  • Condition: Great, some hairlines scratches on bracelet and case
  • Movement: Co-Axial Master Chronometer calibre 8800 with 55 hours of power reserve
  • Bracelet: Steel bracelet with quick extension
  • Case size: 38mm
Posted at
Dec 6, 2025, 8:41 AM
Active
[WTS] Omega Seamaster Aqua Terra 150m Blue 220.10.41.21.03.002

Omega Seamaster Aqua Terra 150m Blue 220.10.41.21.03.002

Aqua Terra 150m Blue, a blue-dialed Omega Seamaster Aqua Terra with 150 meters of water resistance.

  • Bracelet length: 7.25 inches
Posted at
Dec 5, 2025, 9:06 PM
Active
[WTS] Omega Seamaster Aqua Terra 38.5 Green - Complete Set - 2025

Omega Seamaster Aqua Terra 38.5 Green - Complete Set - 2025

A versatile Omega Seamaster Aqua Terra 150M with a green dial, suitable for both sporty and formal occasions.

  • Condition: Excellent
  • Water Resistance: 150M
  • Case Size: 38.5mm
  • Movement: Omega Master Chronometer calibre 8800
Posted at
Dec 5, 2025, 11:11 AM
Active
[WTS] Omega Seamaster Aqua Terra Co-Axial 2803.33.37

Omega Seamaster Aqua Terra Co-Axial 2803.33.37

Omega - 2803.33.37 · $2,250
a 39.2mm Omega Seamaster Aqua Terra Co-Axial watch with an aftermarket strap and original clasp, available for sale.

  • Case Diameter: 39.2mm
  • Band Type: aftermarket
Posted at
Dec 3, 2025, 7:47 PM
Active