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 150m | Calibre 8500 Co-Axial | 231.10.39.21.06.001

Omega - 231.10.39.21.06.001 · $2,799

This Omega Seamaster Aqua Terra features a Calibre 8500 Co-Axial movement, 38.5mm case size and a 7.25 inch bracelet.

Water Resistance: 150m

Posted at

Jan 25, 2026, 9:46 AM

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Omega Seamaster Aqua Terra Silver Dial - 2504.30 - 36mm- $2,350 Shipped ✈️

Omega - 2504.30 · $2,350

A compact Omega Seamaster Aqua Terra in a sought-after 36mm case with a beautiful sunburst silver dial.

Condition: Very good
Case diameter: 36mm
Movement: Omega Co-axial 2500

Posted at

Jan 24, 2026, 9:57 PM

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Omega Aqua Terra 41mm - Ref. 220.13.41.21.03.003

Omega - 220.13.41.21.03.003 · $4,250

This Omega Aqua Terra was inherited from a distant relative and is in excellent condition, with minimal wear on its polished surfaces. It comes with original accessories, including an Omega leather strap and deployant, and has been verified as authentic by the Omega Boutique.

Condition: Excellent
Serial number verified: true
Omega service eligible: true

Posted at

Jan 24, 2026, 4:06 PM

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Omega Seamaster Aqua Terra 38 Green 220.12.38.20.10.001

Omega - 220.12.38.20.10.001 · $4,999

Aqua Terra 38 Green, a luxury watch from Omega, in mint condition with original box and papers.

Condition: Mint condition
Box and papers included: true
Tag included: true

Posted at

Jan 24, 2026, 2:21 PM

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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

This Omega Seamaster Aqua Terra Grey is a 2023 model, featuring a 41mm case.

Condition: Excellent condition with minimal signs of wear
Year: 2023
Size: 41mm diameter
Contents: inner & outer box, card holder, international warranty card, master chronometer card, pictograms card

Posted at

Jan 24, 2026, 1:54 PM

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[US] Omega Seamaster Aqua Terra 150m - Turquoise Dial - 41mm - 220.32.41.21.03.001

Omega - 220.32.41.21.03.001 · $7,150

This Omega Seamaster Aqua Terra features a turquoise dial and is housed in a 41mm case.

Condition: Fantastic condition with minor hairlines
Depth rating: 150m
Case size: 41mm
Water resistance: 150m

Posted at

Jan 24, 2026, 9:38 AM

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OMEGA Seamaster Aqua Terra Worldtimer "Summer Blue" Ref. 220.10.43.22.03.002 - ULTIMATE SET! 🔥$10,250🔥

OMEGA - 220.10.43.22.03.002 · $10,250

The OMEGA Seamaster Aqua Terra Worldtimer is a sophisticated travel companion that puts the world on your wrist. It features a 43mm stainless steel case, a dial with a laser-ablated Earth design, and a 24-hour glass ring indicating day and night.

Condition: VERY GOOD (some light scratches on case and bracelet)
Case size: 43mm
Bracelet size: ~7"
Contents: ULTIMATE SET (includes box, papers, serial hang tag, spare links, shipping coffin, and digital copy of original purchase receipt)

Posted at

Jan 23, 2026, 9:12 PM

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OMEGA Seamaster Aqua Terra 150M Terracotta Ref. 220.10.38.20.13.003 - ULTIMATE SET! 🔥$6,500🔥

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 is powered by the Co-Axial Master Chronometer Calibre 8800.

Condition: UNWORN
Case size: 38mm
Bracelet length: ~7"
Contents: box, papers, serial hang tag, spare links, shipping coffin, digital copy of original purchase receipt

Posted at

Jan 23, 2026, 9:10 PM

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Omega Seamaster Aqua Terra 150m | Master Co-Axial | 41.5mm | 231.10.42.21.03.003 Blue

Omega - 231.10.42.21.03.003 · $3,750

This Omega Seamaster Aqua Terra is a Master Co-Axial watch featuring a 41.5mm case and a 7.25" bracelet.

Case Size: 41.5mm diameter
Bracelet Length: 7.25 inches

Posted at

Jan 23, 2026, 6:33 PM

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