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

2025 Omega Aqua Terra 150M 41mm Turquoise Gradient, Ceramic Bezel (220.32.41.21.03.001)

Omega - 220.32.41.21.03.001 · $6,300

The Omega Aqua Terra is a tribute to the brand's maritime heritage, featuring a symmetrical stainless-steel case with a brushed ceramic bezel and a wave-edged screw-in caseback. The watch boasts a lacquered turquoise dial with a black gradient effect and facetted hands.

Condition: Excellent plus condition
Case material: stainless steel
Bezel material: ceramic
Diameter: 41mm

Posted at

Jan 3, 2026, 2:06 PM

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Omega Seamaster Aqua Terra 150m | Calibre 8500 Co-Axial | 231.10.39.21.06.001

Omega - 231.10.39.21.06.001 · $2,850

This Omega Seamaster Aqua Terra features a Calibre 8500 Co-Axial movement and is water resistant up to 150m.

Calibre: Calibre 8500 Co-Axial
Bracelet length: 7.25 inches
Case size: 38.5mm

Posted at

Jan 3, 2026, 12:25 PM

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

Omega - 231.10.39.21.01.001 · $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

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

OMEGA - 220.10.43.22.03.002 · $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

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

OMEGA - 220.10.38.20.13.003 · $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

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

Omega - 22010412101002 · $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

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