Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Orange / Rubber

Reference 2909.50.91

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 2909.50.91 is a masterpiece that beautifully marries adventure with sophistication. This stunning watch features a sleek stainless steel case, a black dial with mixed indexes, and vibrant orange accents. The rotating bezel is a vital feature for divers, allowing for easy tracking of dive times. At the heart of this timepiece lies the Omega Caliber 2500 co-axial movement, a significant leap in watchmaking technology designed to improve accuracy and reduce maintenance frequency. With a power reserve of 48 hours, you can confidently take this watch off for a weekend without worrying about it stopping. The rubber strap adds comfort while the stainless steel case ensures durability. This watch is built for serious underwater adventures with a water resistance of 600 meters.
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MSRP: $3,750
Market Price: $3,070

Key Features

  • Omega Caliber 2500 co-axial movement
  • Water resistance: 600 meters
  • Rotating 0-60 bezel (dive)
  • 42mm case diameter
  • Rubber strap for comfort and style
  • Black dial with mixed indexes and orange accents

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Orange / Rubber
Reference
2909.50.91
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] Omega Seamaster Planet Ocean 600M 232.92.42.21.03.001 42mm Titanium Blue 2020

Omega Seamaster Planet Ocean 600M 232.92.42.21.03.001 42mm Titanium Blue 2020

A blue dial Omega Seamaster Planet Ocean 600M with a 42mm titanium case, featuring a Calibre 8500 automatic movement and 600m water resistance.

  • Condition: Excellent pre-owned condition with light wear
  • Case size: 42mm diameter
  • Material: titanium
  • Movement: Calibre 8500, Co-Axial, automatic
Posted at
Apr 12, 2026, 1:48 PM
Active
[WTS] Omega Seamaster Planet Ocean 232.30.42.21.01.003 – 42mm

Omega Seamaster Planet Ocean 232.30.42.21.01.003 – 42mm

This is a listing for an Omega Seamaster Planet Ocean watch.

  • Model name: Planet Ocean
  • Case size: 42mm
Posted at
Apr 12, 2026, 12:51 PM
Active
[WTS] Omega Seamaster Planet Ocean 215.30.44.21.01.002 – 43.5mm – Full Set

Omega Seamaster Planet Ocean 215.30.44.21.01.002 – 43.5mm – Full Set

This Omega Seamaster Planet Ocean is a 43.5mm watch with additional details provided.

  • Case size: 43.5mm
Posted at
Apr 12, 2026, 12:15 PM
Active
[WTS][US] Omega Seamaster Planet Ocean Chrono 600m - Black Dial - 45.5mm - 215.30.46.51.01.001 - Full Set

[US] Omega Seamaster Planet Ocean Chrono 600m - Black Dial - 45.5mm - 215.30.46.51.01.001 - Full Set

A Omega Seamaster Planet Ocean Chrono 600m watch featuring a black dial and measuring 45.5mm in diameter.

  • Condition: Fantastic with minor hairlines
  • Case Size: 45.5mm diameter
  • Depth Rating: 600m
Posted at
Apr 12, 2026, 9:47 AM
Active
[wts] Omega Seamaster Planet Ocean 8500 Orange 45.5mm 232.32.46.21.01.003 on Omega mesh bracelet

Omega Seamaster Planet Ocean 8500 Orange 45.5mm 232.32.46.21.01.003 on Omega mesh bracelet

The Omega Seamaster Planet Ocean Orange 8500 features a 45.5mm case, gray bezel that was swapped for an OEM orange one, and comes with a mesh/milanese bracelet.

  • Condition: Near mint
  • Bracelet type: Omega mesh/milanese
  • Case size: 45.5mm
  • Bezel color: Orange
Posted at
Apr 11, 2026, 5:11 PM
Active
[wts] Omega Seamaster Planet Ocean 8500 45.5mm 232.32.46.21.01.005

Omega Seamaster Planet Ocean 8500 45.5mm 232.32.46.21.01.005

Additional Details: Omega Seamaster Planet Ocean 8500 45.5mm comes with boxes and papers.

  • Condition: Great
  • Case Size: 45.5mm diameter
  • Shipping: Shipped via FedEx within the US
Posted at
Apr 11, 2026, 5:08 PM
Active
[wts] Rare Omega Seamaster Planet Ocean 2500D 45.5mm 2200.50.00

Rare Omega Seamaster Planet Ocean 2500D 45.5mm 2200.50.00

Omega - 2200.50.00 · $3,900
A rare Omega Seamaster Planet Ocean model, featuring a 45.5mm case size and coming with original boxes and warranty.

  • Condition: Excellent
  • Case Diameter: 45.5mm
Posted at
Apr 11, 2026, 5:05 PM
Active
[wts] Omega Seamaster Planet Ocean Chronograph 45.5mm 232.30.46.51.01.001

Omega Seamaster Planet Ocean Chronograph 45.5mm 232.30.46.51.01.001

This Omega Seamaster Planet Ocean Chronograph is a 45.5mm watch that comes in full set.

  • Condition: Excellent condition
  • Case size: 45.5mm
  • Water resistance: 300m
Posted at
Apr 11, 2026, 4:40 PM
Active
[wts] Omega Seamaster Planet Ocean Chronograph 9300 Orange 45.5mm 232.32.46.51.01.001

Omega Seamaster Planet Ocean Chronograph 9300 Orange 45.5mm 232.32.46.51.01.001

This Omega Seamaster Planet Ocean Chronograph features a 45.5mm case and comes with additional details such as boxes and warranty.

  • Case size: 45.5mm
  • Strap color: orange (swapped)
  • Strap type: black
Posted at
Apr 11, 2026, 4:38 PM
Active