The Wristwatch Field Guide

Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium)

231.90.39.21.04.001 Archive · used only

The Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium) is a discontinued dress watch with a grey grade 5 case, finished with brushed and polished. It measures 38.5 mm across, and is water resistant to 150 m. Inside is the Omega Caliber 8500 co-axial chronometer (>15,000 gauss anti-magnetic) movement, with 60 h power reserve. Complications: Date. Brand origin: Switzerland. No longer offered new; listed here as an archive reference for the used market.

Titanium and ceramic dress watchesTitaniumDisplay back
Reference
231.90.39.21.04.001
Type
Dress
Price
– · Secondary market only
Case diameter
38.5 mm
Thickness
Lug-to-lug
Water resistance
150 m
Weight
Origin
Switzerland
Movement
Co-Axial chronometer (>15,000 gauss anti-magnetic)
Caliber
Omega Caliber 8500
Power reserve
60 h
Complications
Date
Material
Titanium
Grade / type
Grade 5
Colour
Grey
Hardness
Construction
Surface treatment
Brushed and polished
Caseback
Titanium
Nickel-free
Not verified (clasp or buckle material not confirmed)
Bracelet / strap
Titanium bracelet; push-button deployant clasp
Matching bracelet
Standard
Crystal
Sapphire, AR coated
Display back
Yes
Dial
White lacquered, applied blue indexes
Lume
Super-LumiNova
Availability
No longer offered
Status
No longer in production (2014 GoodPlanet Foundation edition)
High confidence Verified Jun 2026 Source: Omega (maker) / AuthenticWatches Maker / listing ↗ Suggested by u/Watches-and-Books
Facts are free to cite with a link.
See it in the interactive guide

Similar titanium and ceramic watches

Alternatives to the Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium)

More titanium and ceramic watches from Omega

Frequently asked questions

What is the case material of the Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium)?

The Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium) has a grey grade 5 case with a titanium caseback. This is confirmed against the maker spec.

What size is the Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium)?

It is 38.5 mm in diameter, and water resistant to 150 m.

How much does the Omega Seamaster Aqua Terra 150M GoodPlanet (Titanium) cost, and is it available?

It is no longer offered new; the guide keeps it as an archive reference for the used market.

All titanium and ceramic Omega watches · Titanium and ceramic dress watches · All 1040 watches

Learn: Titanium vs Ceramic · Ceramized Titanium