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 38.5mm –Discontinued Grey Skyfall “Teak”Dial - Full Set in Excellent Condition

Omega Seamaster Aqua Terra 38.5mm –Discontinued Grey Skyfall “Teak”Dial - Full Set in Excellent Condition

Omega - 231.10.39.21.06.001 · $3,950
A 2021 Omega Seamaster Aqua Terra 38.5mm with a highly sought-after grey teak 'Skyfall' dial, featuring an in-house Calibre 8500 Co-Axial movement and a smooth 60-hour power reserve.

  • Condition: Excellent
  • Case Size: 38.5mm diameter
  • Dial Color: grey with teak pattern
  • Movement: Omega Co-Axial Calibre 8500
Posted at
Jan 12, 2026, 11:33 PM
Active
View listing on r/WatchExchange
[WTS] Omega Aqua Terra 220.10.41.21 Black Dial 41mm Full Kit 2023 - $4,250

Omega Aqua Terra 220.10.41.21 Black Dial 41mm Full Kit 2023 - $4,250

Omega - 220.10.41.21 · $4,250
Up for sale is my very good condition Omega Seamaster Aqua Terra with a Calibre OMEGA 8900 automatic movement and measuring at 41mm.

  • Condition: Very good condition, minor marks on the case back and bezel
  • Movement: Calibre OMEGA 8900 automatic movement
  • Case size: 41mm diameter
  • Water resistance: 150m
Posted at
Jan 12, 2026, 8:38 PM
Active
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[WTS] Omega Seamaster Aqua Terra |Silver/White teak-pattern dial with solid 18K rose gold hands | 150M 38.5mm | 2023 Full Set in Mint Condition

Omega Seamaster Aqua Terra |Silver/White teak-pattern dial with solid 18K rose gold hands | 150M 38.5mm | 2023 Full Set in Mint Condition

Omega - 231.13.39.21.02.003 · $4,890
A beautifully proportioned Omega Seamaster Aqua Terra 150M in the highly sought-after 38.5mm case, powered by Omega’s in-house Master Co-Axial Caliber 8500.

  • Condition: Excellent
  • Case size: 38.5mm diameter
  • Movement: Omega Master Co-Axial Cal. 8500
  • Dial: Silver-white teak pattern
Posted at
Jan 12, 2026, 8:14 PM
Active
View listing on r/WatchExchange
[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

Omega - 220.10.41.21.03.002 · $3,999
This Omega Seamaster Aqua Terra features a blue dial with a 150m water resistance.

  • Condition: like new
  • Bracelet length: 7.25 inches
  • Payment methods: Zelle, Venmo, Western Union
Posted at
Jan 12, 2026, 2:43 PM
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[WTS] Omega Seamater Aqua Terra 38mm

Omega Seamater Aqua Terra 38mm

Omega - Aqua Terra 38mm · $4,250
The Omega Seamaster Aqua Terra 38mm is a beautiful watch in good condition, featuring the Aqua Terra 38mm Watch Protection Film on the case and half of its metal bracelet for added scratch protection.

  • Condition: good pre-owned condition
  • Bracelet: metal
  • Strap: 6.75in blue rubber strap from StrapsCo
  • Box: Inner and Outer Box included
Posted at
Jan 11, 2026, 3:35 PM
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[WTS] Omega Seamaster Aqua Terra 2023 41mm Grey 220.10.41.21.06.001 Full Set - $5,495

Omega Seamaster Aqua Terra 2023 41mm Grey 220.10.41.21.06.001 Full Set - $5,495

Omega - 220.10.41.21.06.001 · $5,495
Aqua Terra Grey watch in excellent condition, reference 220.10.41.21.06.001, from 2023.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2023
  • Case size: 41mm
  • Contents: Watch (full links),Inner & Outer Box,Card Holder,International Warranty Card,Master Chronometer Card,Pictograms Card
Posted at
Jan 11, 2026, 1:33 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Aqua Terra 150M – Ref. 231.10.42.21.01.003 – 41.5mm – Box & Watch – $2999 Shipped

Omega Seamaster Aqua Terra 150M – Ref. 231.10.42.21.01.003 – 41.5mm – Box & Watch – $2999 Shipped

Omega - 231.10.42.21.01.003 · $2,999
The Omega Seamaster Aqua Terra 150M is a versatile everyday watch featuring a 41.5mm stainless steel case, black dial with teak-style vertical pattern, and date at 3 o'clock, powered by Omega's Master Co-Axial chronometer movement.

  • Condition: Good overall with light wear
  • Case size: 41.5mm diameter
  • Bracelet length adjustment: 7.4-inch wrist
Posted at
Jan 10, 2026, 9:24 PM
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[WTS] Omega Seamaster Aqua Terra – Discontinued Black “Teak” Dial| 42mm Master Co- Axial | Reference: 231.10.42.21.01.003| Full Set

Omega Seamaster Aqua Terra – Discontinued Black “Teak” Dial| 42mm Master Co- Axial | Reference: 231.10.42.21.01.003| Full Set

Omega - 231.10.42.21.01.003 · $4,250
A discontinued, classically styled Aqua Terra with the desirable black teak dial, powered by Omega’s robust Master Co-Axial technology. A versatile luxury sports watch equally at home with a suit or casual wear, and an excellent example of Omega’s technical evolution prior to the Master Chronometer era.

  • Condition: Very good overall condition
  • Diameter: 41.5mm
  • Water resistance: 150m / 500ft
  • Movement type: Master Co-Axial automatic movement
Posted at
Jan 10, 2026, 8:07 PM
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[WTS] Omega Seamaster Aqua Terra 150M “Spectre” Blue Dial – 41.5mm|Ref: 231.10.42.21.03.003| Full Set | Mint Condition

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

Omega - 231.10.42.21.03.003 · $3,990
This highly sought-after Aqua Terra 'Spectre' configuration features a blue teak dial and in-house Calibre 8500, delivering reliable Co-Axial performance and strong wrist presence.

  • Condition: Excellent condition throughout
  • Case size: 41.5mm
  • Depth rating: 150m
Posted at
Jan 10, 2026, 6:02 PM
Active
View listing on r/WatchExchange