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Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
  • Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003
Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003

Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003

$4,000.00 USD
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Case #690 — Omega Seamaster Aqua Terra 150M 41.5 Blue “Spectre” Ref. 231.10.42.21.03.003

Status: Available
Condition: Excellent Pre-Owned
Scope: Box, Papers, and Cards

Case Notes

The Aqua Terra has always been Omega’s answer to the one-watch question, and this blue teak-dial generation is one of the references that explains why.

The 41.5 mm stainless-steel case is paired with a rich blue dial cut with the vertical teak pattern that defined this era of Aqua Terra design. Applied markers, polished hands, and a framed date aperture at 3 o’clock keep the layout clean and highly legible, while the steel bracelet gives it enough presence to work as a true everyday sports watch.

Inside is Omega’s Co-Axial Calibre 8500, a twin-barrel automatic chronometer movement with approximately 60 hours of power reserve.

This example dates from 2017 and presents in Excellent Pre-Owned condition. It includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.

The Evidence

Reference: 231.10.42.21.03.003
Model: Seamaster Aqua Terra 150M
Year: 2017
Case: Stainless Steel
Case Diameter: 41.5 mm
Case Thickness: Approximately 13 mm
Lug Width: 20 mm
Dial: Blue Vertical Teak Pattern
Crystal: Sapphire
Bezel: Fixed Stainless Steel
Caseback: Sapphire Exhibition
Movement: Omega Co-Axial Calibre 8500
Movement Type: Automatic
Certification: Chronometer
Frequency: 25,200 VPH
Jewels: 39
Power Reserve: Approximately 60 Hours
Functions: Hours, Minutes, Central Seconds, Date
Water Resistance: 150 meters / 500 feet
Bracelet: Stainless Steel
Bracelet Fit: Approximately 7¾-inch Wrist
Condition: Excellent Pre-Owned
Included: Box, Papers, and Cards

Collector Provenance

This generation of Aqua Terra sits at an important point in Omega’s modern development.

The Calibre 8500 was one of the movements that established Omega’s modern in-house Co-Axial era, built around twin barrels, a 60-hour reserve, and a movement architecture designed specifically for the Co-Axial escapement.

The watch around it remained deliberately versatile.

It carries enough polish to work in a professional setting, but 150 meters of water resistance, a screw-down crown, and a robust automatic movement make it far more capable than a conventional dress watch.

Design Provenance

The blue teak dial is the defining feature.

Rather than using a flat sunburst finish, Omega cut the surface with vertical lines inspired by the wooden decks of sailing yachts.

The result is a dial that changes substantially with the light, moving between navy, cobalt, and darker blue tones depending on angle.

The polished indices and hands add contrast without overwhelming the texture, while the steel bracelet keeps the watch visually cohesive.

At 41.5 mm, the watch has meaningful wrist presence but remains balanced enough for regular daily wear.

Technical Provenance

The Calibre 8500 is the technical centerpiece of this generation.

It runs at 25,200 vibrations per hour and uses twin barrels to provide approximately 60 hours of power reserve.

The movement is visible through the sapphire exhibition caseback and forms a meaningful part of the ownership experience.

The 150-meter water-resistance rating also gives the watch genuine everyday capability, making it equally comfortable around the office, on the road, or near the water.

From the Case File

The Aqua Terra works because it does not force the owner to choose between polished and practical.

The blue teak dial gives the watch visual character, while the steel bracelet, 150-meter rating, and 60-hour movement keep it useful.

Case 690 dates from 2017 and presents in Excellent Pre-Owned condition.

It includes its Box, Papers, and Cards and is currently sized for approximately a 7¾-inch wrist.

Buy with Confidence

BST guarantees the authenticity of every watch we sell and provides a 30-day mechanical performance guarantee under normal use.

Accuracy may vary with age and service history, and water resistance is not guaranteed unless specifically stated and pressure-tested.

BST Verdict

A particularly strong example of the pre-Master Chronometer Aqua Terra generation.

The blue vertical teak dial, 41.5 mm steel case, Calibre 8500, 60-hour reserve, and 150-meter capability make the 231.10.42.21.03.003 a true all-purpose Omega.

Case 690 adds a 2017 date, Excellent condition, and complete BPC presentation to one of the most recognizable Aqua Terra configurations of its era.

Every case deserves a closer look.