Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 42 Mécanique 24 Sapphires

Reference 2912.50.38

About this watch

The Omega Seamaster Planet Ocean 2912.50.38 is a masterclass in technical excellence and luxury appeal. Crafted from a stunning combination of white gold and stainless steel, this watch exudes rugged elegance while boasting cutting-edge technology. The mesmerizing blue mother of pearl dial features mixed indexes and arrow hands for easy readability, even underwater. At the heart of this timepiece lies the Omega caliber 2500, an automatic movement renowned for its Co-Axial escapement, reducing friction among its parts and enhancing accuracy and longevity. With a power reserve of 48 hours and certified chronometric performance, this watch is designed for serious divers and water enthusiasts. Its stunning design, robust functionality, and luxurious materials make it a fantastic choice for anyone who appreciates high-quality timepieces. The Omega Seamaster Planet Ocean 2912.50.38 is not just a watch; it's a statement piece that combines style, performance, and durability in perfect harmony.
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Key Features

  • Omega caliber 2500 automatic movement
  • Co-Axial escapement for enhanced accuracy and longevity
  • 48-hour power reserve
  • Certified chronometric performance
  • 600m water resistance
  • White gold and stainless steel construction
  • Sapphire glass crystal

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 42 Mécanique 24 Sapphires
Reference
2912.50.38
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
42mm
Dial Color
Blue
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 - COMPLETE SET! 🔥$4,150🔥

OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 - COMPLETE SET! 🔥$4,150🔥

The OMEGA Seamaster Planet Ocean 600M is a robust and elegant dive watch that embodies OMEGA's commitment to ocean exploration and precision engineering.

  • Condition: Very Good, few superficial scratches on case
  • Movement: Co-Axial Caliber 8500
  • Water resistance: up to 600 meters (2000 feet)
  • Case size: 42mm diameter
Posted at
Mar 13, 2026, 8:25 PM
Active
[WTS] Omega Seamaster Planet Ocean Titanium – Ref 232.92.42.21.03.001

Omega Seamaster Planet Ocean Titanium – Ref 232.92.42.21.03.001

This Omega Seamaster Planet Ocean 600M features a titanium case, blue ceramic Liquidmetal bezel, and 600m dive rating.

  • Condition: Very good condition, normal wear consistent with use
  • Case size: 42 mm diameter
  • Water resistance: 600m depth rating
  • Movement type: Co-Axial calibre 8500
Posted at
Mar 13, 2026, 10:53 AM
Active
[WTS] Omega Seamaster Planet Ocean Chronograph – Ref 232.90.46.51.03.001

Omega Seamaster Planet Ocean Chronograph – Ref 232.90.46.51.03.001

This Omega Seamaster Planet Ocean Chronograph features a titanium case, blue ceramic bezel, and in-house calibre 9300 chronograph.

  • Condition: Very good condition
  • Case diameter: 45.5mm
  • Bezel material: blue ceramic
  • Water resistance: 600m
Posted at
Mar 13, 2026, 10:48 AM
Active
[WTS] Omega Seamaster Planet Ocean 2201.50 42mm - $2,700 - Reserved post for u/whitekimchee

Omega Seamaster Planet Ocean 2201.50 42mm - $2,700 - Reserved post for u/whitekimchee

Omega - 2201.50 · $2,700
Up for sale is my Omega Seamaster Planet Ocean 2201.50, a 42mm automatic watch with an Omega Calibre 2500 movement.

  • Condition: very good condition with minimal marks/hairlines
  • Movement: Omega Calibre 2500
  • Bracelet length: unknown
  • Shipping cost: Fedex Priority Shipping from the Philippines with possible additional tariffs for USA buyers
Posted at
Mar 10, 2026, 9:12 PM
Active
[WTS] Omega Seamaster Planet Ocean 2201.50 42mm - $2,700 - Reserved post for u/Impossible_Air725

Omega Seamaster Planet Ocean 2201.50 42mm - $2,700 - Reserved post for u/Impossible_Air725

Omega - 2201.50 · $2,700
Up for sale is my great condition Omega Seamaster Planet Ocean 2201.50, featuring an automatic Omega Calibre 2500 movement and measuring at 42mm.

  • Condition: Very good condition for its age, minimal marks/hairlines on case and bracelet
  • Movement: Omega Calibre 2500
  • Case material: Steel
  • Bracelet type: Original Omega steel bracelet
Posted at
Mar 10, 2026, 9:10 PM
Active
[WTS] Omega Seamaster Planet Ocean GoodPlanet Blue Dial 43.5mm 232.30.44.22.03.001

Omega Seamaster Planet Ocean GoodPlanet Blue Dial 43.5mm 232.30.44.22.03.001

The Omega Seamaster Planet Ocean GMT features a bold stainless steel case, rich blue dial, and matching ceramic bezel with true GMT functionality.

  • Condition: Excellent pre-owned condition
  • Case Size: 44mm
  • Bracelet Size: 7.5 inches
  • Water Resistance Depth: 600m
Posted at
Mar 10, 2026, 8:04 PM
Active
[WTS] Omega Seamaster Planet Ocean Titanium – 42mm – 2025 Complete Set

Omega Seamaster Planet Ocean Titanium – 42mm – 2025 Complete Set

This Omega Seamaster Planet Ocean features a blue ceramic bezel and dial, titanium case, and bracelet.

  • Condition: Mint condition
  • Case diameter: 42mm
  • Water resistance: 600m / 2000ft
  • Movement: Omega Calibre 8500 automatic chronometer
Posted at
Mar 10, 2026, 2:00 PM
Active
[WTS] Omega Seamaster Planet Ocean 42mm, full set, excellent, $4750

Omega Seamaster Planet Ocean 42mm, full set, excellent, $4750

This Omega Seamaster Planet Ocean 600M features the Co-Axial Caliber 8500 automatic movement, ceramic bezel, and impressive 600 meters of water resistance. It has been well cared for and is in remarkable condition.

  • Condition: Excellent pre-owned condition
  • Case Size: 42mm diameter
  • Movement: Omega Co-Axial Caliber 8500 Automatic
  • Water Resistance: 2000ft / 600M
Posted at
Mar 10, 2026, 10:55 AM
Active
[WTS] Omega Seamaster Planet Ocean 2201.50

Omega Seamaster Planet Ocean 2201.50

A first-generation Omega Seamaster Planet Ocean in excellent condition, featuring a 42mm size and exceptional condition for its age.

  • Condition: Extremely good, minor marks/swirls
  • Movement: 2500C COSC certified
  • Bracelet size: fits 7.25 inch wrist with additional half-link
  • Service history: serviced in December 2025
Posted at
Mar 9, 2026, 10:27 PM
Active