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 Seamaster Aqua Terra 150m | Calibre 8500 Co-Axial | 231.10.39.21.01.001

Omega Seamaster Aqua Terra 150m | Calibre 8500 Co-Axial | 231.10.39.21.01.001

Omega - 231.10.39.21.01.001 路 $2,850
This Omega Seamaster Aqua Terra features a Calibre 8500 Co-Axial movement, a 38.5mm case, and a 7.25 inch bracelet.

  • Case size: 38.5mm diameter
  • Water resistance: 150m
Posted at
Jan 3, 2026, 11:36 AM
Active
View listing on r/WatchExchange
[WTS] OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET!

OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET!

OMEGA - 220.10.43.22.03.002 路 $10,250
The OMEGA Seamaster Aqua Terra Worldtimer is a sophisticated travel companion that features a 43mm stainless steel case, dial with laser-ablated texture, 24-hour glass ring, and powered by the Master Chronometer Calibre 8938.

  • Condition: [VERY GOOD] Some light scratches on case and bracelet.
  • Case size: 43mm diameter
  • Bracelet size: ~7"
Posted at
Jan 3, 2026, 4:25 AM
Active
View listing on r/WatchExchange
[WTS] OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET!

OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET!

OMEGA - 220.10.38.20.13.003 路 $6,500
The OMEGA Seamaster Aqua Terra Ref. 220.10.38.20.13.003 features a Terracotta dial, symmetrical case design and rhodium-plated hands.

  • Condition: UNWORN
  • Case size: 38mm
  • Bracelet length: ~7 inches pre-sized
Posted at
Jan 3, 2026, 3:31 AM
Active
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[WTS] Omega Seamaster Aqua Terra Black Lacquer 41mm | Day 9/12 | 12 Days of Christmas馃巹

Omega Seamaster Aqua Terra Black Lacquer 41mm | Day 9/12 | 12 Days of Christmas馃巹

Omega - 22010412101002 路 $4,900
The Omega Aqua Terra 41 is a versatile watch that embodies quiet strength and everyday balance, designed for real life with a high-gloss black dial and exceptional wearability.

  • Movement: Omega Co-Axial Master Chronometer calibre 8900 automatic
  • Case size: 41mm
  • Material: stainless steel
Posted at
Jan 2, 2026, 10:09 PM
Active
View listing on r/WatchExchange
[WTS] Omega Aqua Terra 41mm - Ref. 220.13.41.21.03.003

Omega Aqua Terra 41mm - Ref. 220.13.41.21.03.003

Omega - 220.13.41.21.03.003 路 $4,999
This Omega Aqua Terra was inherited from a serious watch collector and is being sold to add a white-dial diver to the owner's collection.

  • Condition: Excellent
  • Serial number verified by omega boutique: true
  • Omega service eligibility: true
Posted at
Jan 2, 2026, 9:31 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra 150m | 41.5mm | White | 231.10.42.21.02.006

Omega Seamaster Aqua Terra 150m | 41.5mm | White | 231.10.42.21.02.006

Omega - 231.10.42.21.02.006 路 $3,799
The Omega Seamaster Aqua Terra is a 41.5mm watch with 150m water resistance, featuring a white dial and 7" bracelet.

  • Water resistance: 150m
  • Bracelet length: 7 inches
Posted at
Jan 2, 2026, 8:48 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra 150m | Quartz | 231.10.39.60.06.001

Omega Seamaster Aqua Terra 150m | Quartz | 231.10.39.60.06.001

Omega - 231.10.39.60.06.001 路 $2,350
This Omega Seamaster Aqua Terra is a Quartz-powered timepiece featuring a 38.5mm case.

  • Case Size: 38.5mm
  • Bracelet Length: 7.25"
  • Water Resistance: 150m
Posted at
Jan 2, 2026, 8:47 PM
Active
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[WTS] Omega Aqua Terra 41mm Black Laquer Dial-O22010412101002- great condition- full set and warranty!

Omega Aqua Terra 41mm Black Laquer Dial-O22010412101002- great condition- full set and warranty!

Omega - O22010412101002 路 $6,000
The Omega Aqua Terra features a high-gloss black varnish dial and offers a cleaner and more premium look compared to the traditional teak lines. The watch has a polished center link with minor hairlines from light wear and is in great condition overall.

  • Condition: Great condition
  • Diameter: 41mm
  • Water resistance: 150m
  • Movement: Omega Calibre 8900 (Master Chronometer)
Posted at
Jan 2, 2026, 1:00 PM
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[WTS] Omega Seamaster Aqua Terra 231.10.39 38.5mm Quartz Grey Teak

Omega Seamaster Aqua Terra 231.10.39 38.5mm Quartz Grey Teak

Omega - 231.10.39 路 $1,690
Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39, a 38.5mm quartz movement watch with a steel case and original steel Omega bracelet.

  • Condition: Good condition, minimal marks/hairlines on the case and sapphire crystal scratch
  • Case size: 39mm diameter
  • Water resistance: 150m depth rating
  • Movement: Calibre OMEGA 4564 quartz
Posted at
Jan 1, 2026, 8:31 PM
Active
View listing on r/WatchExchange