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

Omega Seamaster Aqua Terra Skyfall 231.10.39 38.5mm - $3,450

Omega - 231.10.39.21.03.001 · $3,450

The Omega Seamaster Aqua Terra 'Skyfall' features a Calibre OMEGA 8500 automatic movement in a 39mm steel case with original AT bracelet and presentation box. It has a sapphire crystal and datewheel, with all functions working well.

Condition: great condition
Case size: 39mm
Movement type: automatic
Water resistance: 150m

Posted at

Apr 21, 2026, 8:56 PM

Active

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Omega Seamaster Aqua Terra 231.10.39 38.5mm Quartz Grey Teak - $1,950

Omega - 231.10.39 · $1,950

This Omega Seamaster Aqua Terra is a quartz watch with a 38.5mm steel case and original AT bracelet. It features a one-liner dial and printed indices, as well as sapphire crystal protection.

Condition: Great condition
Case material: Steel
Bracelet type: Original steel Omega steel bracelet
Crystal type: Sapphire crystal

Posted at

Apr 21, 2026, 8:50 PM

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Omega Seamaster Aqua Terra 2517.50 39mm $1700 Shipped

Omega - 2517.50 · $1,700

The Omega Seamaster Aqua Terra is a great everyday option with a classic black dial look, offering quartz accuracy and maintenance.

Condition: Used with honest wear and light scratching throughout consistent with use
Movement: quartz
Bracelet size fits wrist: 7.25in

Posted at

Apr 21, 2026, 6:47 PM

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Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $2,990

Omega - 231.10.39.21.01.001 · $2,990

Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39.21.01.001 with an automatic Omega Calibre 8500 movement.

Condition: Very good condition for its age
Size: 38.5mm diameter
Movement: Omega Calibre 8500
Case Material: steel

Posted at

Apr 21, 2026, 4:56 AM

Active

View listing on r/WatchExchange

Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm - $2,650

Omega - 231.10.39 Cal 8500 · $2,650

This Omega Aqua Terra is a high-quality watch with a 39mm steel case, Calibre OMEGA 8500 movement, and features a steel bracelet and original presentation box.

Condition: great condition, minimal marks on case and crystal
Case Size: 39mm diameter
Bracelet Material: steel
Movement Calibre: Omega 8500

Posted at

Apr 21, 2026, 4:12 AM

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Omega Seamaster Aqua Terra - 2503.30 - Clean!

Omega - 2503.30 · $2,395

This Omega Seamaster Aqua Terra comes in a 39mm size and features a silver dial and automatic movement. The watch is in fantastic condition with everything functioning as it should.

Condition: Pre-owned, light wear throughout
Size: 39mm diameter
Movement: Automatic

Posted at

Apr 20, 2026, 6:21 PM

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Omega Seamaster Aqua Terra Blue Dial Full Set 2017 $3495 Shipped

Omega - 231.10.42.21.03.003 · $3,495

This Omega Seamaster Aqua Terra features a blue teak dial and is a clean, versatile piece that works well daily or dressed up.

Condition: Excellent
Case size: 41.5mm diameter
Movement: Master Co Axial Chronometer
Water resistance: 150m / 500ft depth rating

Posted at

Apr 20, 2026, 6:06 PM

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Omega - 2502.34.00 Seamaster Aqua Terra

Omega - 2502.34.00

Posted at

Apr 20, 2026, 12:25 PM

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Omega Seamaster Aqua Terra 15,000 Gauss 231.10.42.21.01.002 Full Set 2019

Omega - 231.10.42.21.01.002 · $5,900

The Omega Seamaster Aqua Terra >15,000 Gauss is a distinctive modern Aqua Terra reference known for its black textured dial and impressive anti-magnetic capability. It measures 41.5mm in stainless steel and features Omega's Co-Axial movement.

Condition: Excellent, with no visible scratches and excellent crystal condition
Case Material: Stainless Steel
Case Size: 41.5mm diameter
Movement: Co-Axial movement

Posted at

Apr 19, 2026, 6:08 PM

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