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

Reference 2900.50.37

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][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
[wts] Omega Seamaster Planet Ocean 8900 Blue 43.5mm 215.30.44.21.03.001 underwarranty

Omega Seamaster Planet Ocean 8900 Blue 43.5mm 215.30.44.21.03.001 underwarranty

The Omega Seamaster Planet Ocean 8900 Blue is a luxury dive watch featuring a 43.5mm case and a factory warranty valid until NOV 2028.

  • Condition: Gently used with boxes in great condition
  • Warranty Valid Until: NOV 2028
  • Shipping Options: via FedEx anywhere in the US
Posted at
Apr 11, 2026, 4:36 PM
Active
[wts] Omega Seamaster Planet Ocean 8900 Blue 43.5mm 215.30.44.21.03.001 under warranty

Omega Seamaster Planet Ocean 8900 Blue 43.5mm 215.30.44.21.03.001 under warranty

This Omega Seamaster Planet Ocean 8900 Blue is a 43.5mm watch with factory warranty valid through SEP 2028.

  • Case size: 43.5mm diameter
Posted at
Apr 11, 2026, 4:33 PM
Active
[wts] Omega Seamaster Planet Ocean 8500 Orange😍🍊 45.5mm 232.32.46.21.01.001

Omega Seamaster Planet Ocean 8500 Orange😍🍊 45.5mm 232.32.46.21.01.001

This Omega Seamaster Planet Ocean 8500 is a 45.5mm watch with a full set available for sale.

  • Condition: great condition
  • Case diameter: 45.5mm
Posted at
Apr 11, 2026, 4:31 PM
Active