Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator

Reference 2900.50.37

Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator

About this watch

The Omega Seamaster Planet Ocean 2900.50.37 is a luxury watch that embodies style, functionality, and adventure. Founded in 1848, Omega has established itself as a titan in the watch industry, known for precision, quality, and innovative technology. This timepiece features the Omega Caliber 2500 movement, a co-axial version of the ETA 2892-A2 designed to enhance accuracy and reduce friction. The black dial, adorned with luminous markers and hands, ensures readability in any environment. The watch's robust stainless steel case is comfortable on the wrist, while the sapphire crystal protects the dial from scratches and impacts. With a water resistance of 600 meters, it's built for serious divers but doesn't shy away from elegance. The Seamaster Planet Ocean 2900.50.37 is a true embodiment of the brand's dedication to excellence, blending ruggedness and elegance in its design.
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MSRP: $4,200
Market Price: $3,536

Key Features

  • Omega Caliber 2500 movement
  • 600m water resistance
  • Sapphire crystal glass
  • 45.5mm stainless steel case
  • Rotating bezel with 0-60 markings
  • Black dial with luminous markers and hands
  • 48-hour power reserve

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator
Reference
2900.50.37
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
Stainless Steel 45.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] Omega Seamaster Planet Ocean “Creamsicle” 215.30.44.21.04.001

Omega Seamaster Planet Ocean “Creamsicle” 215.30.44.21.04.001

Omega - 215.30.44.21.04.001 · $4,498
The Omega Seamaster Planet Ocean 600M 'Creamisicle' is a dive watch that combines performance and style with its orange bezel, stainless steel case, and crisp white dial.

  • Condition: Pre-owned, great condition
  • Case diameter: 43.5mm
  • Depth rating: 600m
  • Movement type: Self-winding mechanical
Posted at
Apr 17, 2026, 3:50 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 2200.51 – 42mm – Full Set –

Omega Seamaster Planet Ocean 2200.51 – 42mm – Full Set –

Omega - 2200.51 · $4,195
The Omega Seamaster Planet Ocean is a great everyday diver with strong build quality and classic design, featuring the Co-Axial movement in a 42mm stainless steel case.

  • Condition: Very clean overall with light wear consistent with age
  • Case size: 42mm diameter
  • Movement type: Automatic (Caliber 2500)
  • Water resistance: 600m depth rating
Posted at
Apr 17, 2026, 8:24 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 600M – 232.92.42.21.03.001 – 42mm Titanium –

Omega Seamaster Planet Ocean 600M – 232.92.42.21.03.001 – 42mm Titanium –

Omega - 232.92.42.21.03.001 · $12,000
  • Case material: titanium
  • Diameter: 42mm
Posted at
Apr 17, 2026, 8:18 AM
Active
View listing on r/WatchExchange
[WTS] 2020 Omega Seamaster Planet Ocean 600M 42mm Black 232.30.42.21.01.001 Full Set - $4,395

2020 Omega Seamaster Planet Ocean 600M 42mm Black 232.30.42.21.01.001 Full Set - $4,395

Omega - 232.30.42.21.01.001 · $4,395
Up for sale is a Omega Seamaster Planet Ocean 600m 42mm Black, a 2020 model with all original accessories.

  • Condition: Excellent condition with minimal signs of wear
  • Depth Rating: 600m
Posted at
Apr 16, 2026, 6:40 PM
Active
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[WTS] 2025 Omega Seamaster Planet Ocean 600m Titanium Blue 232.92.44.22.03.001 Full Set - $5,295

2025 Omega Seamaster Planet Ocean 600m Titanium Blue 232.92.44.22.03.001 Full Set - $5,295

Omega - 232.92.44.22.03.001 · $5,295
Up for sale is a Omega Seamaster Planet Ocean 600m Titanium Blue, a high-end dive watch featuring a titanium case and blue dial.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2025
  • Depth Rating: 600m
Posted at
Apr 16, 2026, 5:39 PM
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[WTS] Omega Seamaster Planet Ocean 600m 45.5mm 232.30.46.21.01.002 FULL SET

Omega Seamaster Planet Ocean 600m 45.5mm 232.30.46.21.01.002 FULL SET

Omega - 232.30.46.21.01.002 · $2,999
The Omega Seamaster Planet Ocean is a high-end dive watch featuring a 600m water resistance and a 45.5mm case diameter.

  • Condition: pre-owned (polished)
  • Case Size: 45.5mm diameter
  • Water Resistance: 600m
Posted at
Apr 16, 2026, 10:12 AM
Active
View listing on r/WatchExchange
[WTS][US] Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - 232.30.46.21.01.001 - Full Set

[US] Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - 232.30.46.21.01.001 - Full Set

Omega - 232.30.46.21.01.001 · $4,500
This Omega Seamaster Planet Ocean is a high-end diver's watch featuring a black dial and a 45.5mm case.

  • Condition: Fantastic with minor hairlines on case, clasp, or bracelet
  • Case Diameter: 45.5mm
  • Depth Rating: 600m
Posted at
Apr 16, 2026, 7:50 AM
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[WTS] Omega Seamaster Planet Ocean 2900.50

Omega Seamaster Planet Ocean 2900.50

Omega - 2900.50 · $3,100
A used Omega Seamaster Planet Ocean in good working order, sold with a new band and additional accessories.

  • Condition: good with minor issues
  • Case condition: few superficial scratches on case sides
  • Band condition: new
  • Included accessories: PO metal bracelet, warranty card, hang tag, manual, box
Posted at
Apr 15, 2026, 7:37 PM
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[WTS] Omega Seamaster Planet Ocean 2201.51 42mm Box and Card S - $2,950

Omega Seamaster Planet Ocean 2201.51 42mm Box and Card S - $2,950

Omega - 2201.51 · $2,950
Up for sale is my great condition Omega Seamaster Planet Ocean 2201.51, measuring at 42mm with an automatic Omega Calibre 2500 movement.

  • Condition: Very good condition for its age
  • Case size: 42mm diameter
  • Water resistance: 200m depth rating
  • Bracelet length: up to 7-7.25 inch wrists
Posted at
Apr 15, 2026, 4:32 AM
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View listing on r/WatchExchange