Omega Aqua Terra Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Diamond / Black

Reference 231.18.39.21.51.001

Omega Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Diamond / Black

About this watch

The Omega Seamaster Aqua Terra is a masterpiece of horological innovation, seamlessly blending elegance with performance. This stunning timepiece boasts an automatic Omega caliber 8500 movement, providing 60 hours of power reserve and a Master Co-Axial Chronometer designation for exceptional precision and performance. The case is crafted from high-quality stainless steel, resistant to corrosion and wear, while the diamond-set bezel adds a touch of luxury without being overly ostentatious. With its impressive water resistance of 150 meters, this watch is versatile enough for swimming, snorkeling, and everyday wear. Whether you're looking for a professional or laid-back vibe, the Aqua Terra's design allows it to transition seamlessly between different settings, making it the perfect addition to any luxury watch collection.
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Key Features

  • Omega caliber 8500 automatic movement
  • 60 hours of power reserve
  • Master Co-Axial Chronometer designation
  • Stainless steel case with diamond-set bezel
  • 150 meters water resistance
  • Sapphire crystal glass for scratch resistance and clarity
  • Black dial with stick and dot indexes

Specifications

Brand
Omega
Family
Aqua Terra
Model
Seamaster Aqua Terra 150M Co-Axial 38.5 Stainless Steel / Diamond / Black
Reference
231.18.39.21.51.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 38.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
150

Current Listings

[WTS] Omega Aqua Terra Day-Date Blue Dial – Full Set – $3800

Omega Aqua Terra Day-Date Blue Dial – Full Set – $3800

Omega - Aqua Terra Day-Date · $3,800
Up for sale is my Omega Aqua Terra Day/Date with a beautiful blue dial—looks even better in person. The watch is running well and keeping time within COSC specs.

  • Condition: Good condition with normal wear on the case
  • Water Depth Rating: 100m
Posted at
Apr 23, 2026, 7:50 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra 2517.50 39mm HAQ $1650 Shipped

Omega Seamaster Aqua Terra 2517.50 39mm HAQ $1650 Shipped

Omega - 2517.50 · $1,650
This Omega Seamaster Aqua Terra is a great everyday option with a classic black dial look, offering quartz accuracy and maintenance.

  • Condition: Watch only, presents nicely with honest wear and light scratching, accurate HAQ movement
  • Bracelet size: fits 7.25in wrist
  • Movement: HAQ quartz
Posted at
Apr 23, 2026, 6:32 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra Worldtimer “Summer Blue”

Omega Seamaster Aqua Terra Worldtimer “Summer Blue”

Omega - 220.10.43.22.03.002 · $7,799
The Omega Seamaster Aqua Terra Worldtimer features a beautiful gradient blue dial with a laser-ablated topographic map of the continents, powered by the METAS certified Co-Axial Master Chronometer Caliber 8938.

  • Condition: Brand new old stock and unworn
  • Case size: 43mm diameter
  • Movement: Omega Co-Axial Master Chronometer Caliber 8938
  • Complications: Worldtimer
Posted at
Apr 23, 2026, 4:41 PM
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[WTS] 2023 Omega Seamaster Aqua Terra Skyfall Blue 231.10.42.21.03.003 41.5mm Full Set - $4,795

2023 Omega Seamaster Aqua Terra Skyfall Blue 231.10.42.21.03.003 41.5mm Full Set - $4,795

Omega - 231.10.42.21.03.003 · $4,795
This Omega Seamaster Aqua Terra Skyfall Blue is a 2023 model, featuring a 41.5mm case.

  • Condition: Excellent condition with minimal signs of wear
  • Case Size: 41.5mm diameter
Posted at
Apr 23, 2026, 3:04 PM
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[WTS] Omega Aqua Terra 8900 41mm Lacquer Black 220.10.41.21.01.002 ( new / 2026 / box and papers )

Omega Aqua Terra 8900 41mm Lacquer Black 220.10.41.21.01.002 ( new / 2026 / box and papers )

Omega - 220.10.41.21.01.002 · $6,250
This Omega Aqua Terra 8900 features a 41mm stainless steel case and Master Chronometer movement, along with a Lacquer Black dial.

  • Condition: New
  • Case Material: Stainless Steel
  • Movement: Master Chronometer Movement
Posted at
Apr 23, 2026, 2:05 PM
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[WTS] Omega Aqua Terra 38.5mm | 231.10.39.21.02.001 | Complete Set

Omega Aqua Terra 38.5mm | 231.10.39.21.02.001 | Complete Set

Omega - 231.10.39.21.02.001 · $3,650
This Omega Aqua Terra is a 2019 model, complete with a large wooden double box set and various documentation.

  • Condition: Very good with minor scratches
  • Case size: 38.5mm diameter
  • Year: 2019
Posted at
Apr 23, 2026, 10:05 AM
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[WTS] Omega Aqua Terra Black Wave Dial

Omega Aqua Terra Black Wave Dial

Omega - 231.10.42.01.006 · $4,500
I'm selling an Omega Aqua Terra Black Wave Dial, which I bought from Japan last year as NOS and have only worn it about 10 times.

  • Condition: Pre-owned, like new
  • Origin: Japan
  • Warranty: No warranty provided
  • Shipping: Ships from Canada
Posted at
Apr 23, 2026, 9:40 AM
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[WTS] Omega aqua Terra 39 grey dial

Omega aqua Terra 39 grey dial

Omega - 231.10.39.21.06.001
This Omega Seamaster Aqua Terra 38.5mm features a grey teak-pattern dial, powered by an in-house Co-Axial Caliber 8500 with ~60-hour power reserve.

  • Condition: Excellent pre-owned condition
  • Case size: 38.5mm
  • Movement: Automatic (Co-Axial Caliber 8500)
  • Power reserve: ~60 hours
Posted at
Apr 22, 2026, 10:58 PM
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[WTS] Omega Seamaster Aqua Terra Grey Teak 231.10.39.21.06.001

Omega Seamaster Aqua Terra Grey Teak 231.10.39.21.06.001

Omega - 231.10.39.21.06.001 · $2,899
This Omega Seamaster Aqua Terra features a classic teak-pattern gray dial and is available in very good condition.

  • Condition: Very good overall condition with minimal signs of use.
  • Case Size: 38.5mm
  • Movement Type: Omega Co-Axial automatic movement
  • Bracelet Length: up to approximately a 6.75" wrist
Posted at
Apr 22, 2026, 8:20 PM
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