Omega Aqua Terra Seamaster Aqua Terra 150M Master Co-Axial 34 Stainless Steel / Sedna Gold / Diamond / MOP

Reference 231.25.34.20.55.005

Omega Seamaster Aqua Terra 150M Master Co-Axial 34 Stainless Steel / Sedna Gold / Diamond / MOP

About this watch

The Omega Seamaster Aqua Terra 150M Master Co-Axial 34 is a stunning fusion of style and functionality, making it a must-have for any serious watch collector or enthusiast. This exquisite timepiece combines the luxurious appearance of Sedna Gold with the added touch of opulence from its diamond-set bezel. The Mother of Pearl dial reflects light in mesmerizing ways, changing its appearance depending on the angle. With a 34mm case diameter and round shape, this watch is perfectly sized for those who prefer a more delicate look. Its open case back allows for a glimpse of the intricate movement, adding to its charm. Powered by the Omega caliber 8520, this automatic masterpiece boasts a power reserve of 50 hours and a frequency of 25,200 vibrations per hour. The Co-Axial escapement technology enhances performance while reducing friction between moving parts. As a certified chronometer, it guarantees precision in timekeeping. With a water resistance of 150 meters, this watch is ready for aquatic adventures. It also features a convenient date function and is protected by sapphire glass, making it built to last.

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Key Features

Sedna Gold case
Mother of Pearl dial
Diamond-set bezel
Omega caliber 8520 movement
Co-Axial escapement technology
Certified chronometer
150m water resistance

Specifications

Brand

Omega

Family

Aqua Terra

Model

Seamaster Aqua Terra 150M Master Co-Axial 34 Stainless Steel / Sedna Gold / Diamond / MOP

Reference

231.25.34.20.55.005

Movement

8520

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

Sedna Gold 34mm

Dial Color

White

Crystal

Sapphire

Water Resistance

150

Current Listings

Omega Seamaster Aqua Terra 41.5mm "Spectre" Blue - 231.10.42.21.03.003

Omega - 231.10.42.21.03.003 · $3,650

This is a watch-only example of the Omega Seamaster Aqua Terra 'Spectre' Blue, featuring a 41.5mm size and blue dial.

Condition: Pre-owned, great condition with light wear
Size: 41.5mm diameter
Bracelet: center links are brushed instead of polished

Posted at

May 19, 2026, 12:26 PM

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Omega Seamaster Aqua Terra First Gen 39.2mm Black Dial — Ref. 2503.50.00 | Fresh Service | $2,599 Shipped

Omega - 2503.50.00 · $2,599

First-generation Omega Seamaster Aqua Terra ref. 2503.50.00, featuring a 39.2mm case and elegant glossy black dial. Powered by the reliable Omega Co-Axial Cal. 2500, this watch represents a perfect balance between dress watch refinement and everyday versatility.

Condition: very good condition overall
Case size: 39.2mm
Lug-to-lug length: ~46mm
Thickness: ~11.5mm

Posted at

May 19, 2026, 10:37 AM

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Omega Worldtimer Aqua Terra 150m box and papers 43mm $7900+ label

Omega - Worldtimer Aqua Terra 150m box and papers 43mm · $7,900

This Omega Worldtimer Aqua Terra 150m features a 43mm case size, 60 hour power reserve, integrated 18k gold bracelet, and 150 meter water resistance.

Condition: Excellent condition with minor scratches on the bracelet, ripped outer box flap, and taped fix
Bracelet size: 43mm
Water resistance: 150m
Depth rating: 150m depth rating

Posted at

May 18, 2026, 9:24 PM

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Omega Seamaster Aqua Terra 2400

Omega - Aqua Terra 2400

This Omega Seamaster Aqua Terra 2400 is in excellent condition, with a previous owner-reported accuracy of +3 seconds per day. The watch comes with a watch-only bracelet that fits a 7.5-inch wrist.

Condition: fantastic condition, super clean and running super well
Bracelet size: fits about a 7.5 inch wrist
Accuracy: +3 seconds a day

Posted at

May 18, 2026, 5:50 PM

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Omega Seamaster Aqua Terra 220.10.41.21.06.001 41mm Automatic Grey Dial Full Set

Omega - 220.10.41.21.06.001 · $4,995

This Omega Seamaster Aqua Terra features a stainless steel case, grey teak dial, and automatic movement. It comes with an original outer box, inner box, and undated warranty card.

Condition: Very good condition
Movement type: Automatic
Bracelet material: Stainless steel
Case size: 41 mm

Posted at

May 18, 2026, 8:49 AM

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Omega Aqua Terra Quartz 2517.80 39mm Box and Papers - $1,890

Omega - 2517.80 · $1,890

Up for sale is my Omega Seamaster 2517.80, a quartz watch with Calibre Omega 1538 movement and a steel case on original Omega steel bracelet.

Condition: great condition, minimal marks on the case and bracelet
Case size: 39mm diameter
Movement: Calibre Omega 1538 quartz
Bracelet type: original Omega steel bracelet

Posted at

May 17, 2026, 9:26 PM

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Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial - $2,950

Omega - 231.10.39.21.02.002 · $2,950

Up for sale is my great condition Omega Aqua Terra 231.10.39 Cal 8500 38.5 mm Master Co-Axial.

Condition: Great condition, minimal marks on case and caseback
Case Size: 39mm diameter
Bracelet Type: Original Omega steel bracelet (replaced with OEM all brushed version)
Movement: Calibre OMEGA 8500

Posted at

May 17, 2026, 9:22 PM

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Omega Seamaster Aqua Terra 231.10.39.21.01.001 Black Teak 38.5mm - $2,590

Omega - 231.10.39.21.01.001 · $2,590

Up for sale is my great condition Omega Seamaster Aqua Terra 231.10.39.21.01.001. This watch has an automatic Omega Calibre 8500 movement and measures at 38.5mm.

Condition: Very good condition, minor marks/hairlines
Movement: Omega Calibre 8500
Case size: 38.5mm
Bracelet type: Original Omega steel bracelet

Posted at

May 17, 2026, 9:16 PM

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