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

Reference 2900.50.81

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 2900.50.81 is a masterpiece of Swiss craftsmanship, embodying the essence of diving heritage and luxury. This watch boasts an impressive water resistance of up to 600 meters, making it perfect for professional divers and those who enjoy aquatic sports. The bold design features a black dial with mixed indexes, creating a striking contrast against the stainless steel case. The rotating bezel, marked from 0 to 60, allows divers to track their immersion time accurately. At the heart of this watch is the Omega caliber 2500 movement, a marvel of engineering that offers a power reserve of up to 48 hours and a frequency rate of 25,200 vibrations per hour. With its Co-Axial escapement, this movement reduces friction between parts and enhances precision. The Seamaster Planet Ocean is a certified chronometer, undergoing rigorous testing to ensure its accuracy. Whether you're diving into the ocean or attending a formal event, this watch adapts seamlessly to any occasion. Its simple yet effective layout makes reading the time a breeze, while the luminous hands ensure readability in low-light conditions.
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MSRP: $4,400
Market Price: $3,328

Key Features

  • Omega caliber 2500 movement
  • 600 meters water resistance
  • Stainless steel case with rotating bezel
  • Sapphire glass for scratch resistance
  • Black dial with mixed indexes and luminous hands
  • 45.5 mm diameter for a robust presence on the wrist
  • Co-Axial escapement for reduced friction and enhanced precision

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Rubber
Reference
2900.50.81
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

Pre-Owned Omega Seamaster Planet Ocean Ultra Deep 215.30.46.21.04.001

Pre-Owned Omega Seamaster Planet Ocean Ultra Deep 215.30.46.21.04.001

Omega - 215.30.46.21.04.001 · $9,199.009
The Omega Seamaster Planet Ocean Ultra Deep is a pre-owned watch in excellent condition, featuring an automatic movement and a white dial. It has a 46mm O-MEGASTEEL case and is water-resistant to 6,000 meters.

  • Condition: 94% condition, with faint marks on the sides and back of the case, and a few links of the bracelet
  • Case size: 46mm diameter
  • Material: O-MEGASTEEL
  • Dial color: White
Posted at
Jun 14, 2025, 8:37 PM
Active
[WTS] Omega Seamaster Planet Ocean Orange 42mm 2209.50.00

Omega Seamaster Planet Ocean Orange 42mm 2209.50.00

Omega - 2209.50.00 · $3,300
This Omega Seamaster Planet Ocean Orange is a 42mm stainless steel watch with an orange bezel insert and black dial featuring luminous markers and hands. It has an Omega Caliber 2500 Co-Axial Automatic movement and a water resistance of 600m.

  • Condition: Excellent (minor signs of careful wear)
  • Case Size: 42mm
  • Water Resistance: 600m / 2000ft
  • Movement: Omega Caliber 2500 Co-Axial Automatic
Posted at
Jun 14, 2025, 3:23 PM
Active
Pre-Owned Omega Seamaster Planet Ocean Ultra Deep 215.30.46.21.04.001

Pre-Owned Omega Seamaster Planet Ocean Ultra Deep 215.30.46.21.04.001

Omega - 215.30.46.21.04.001 · $9,199.009
Pre-Owned Omega Seamaster Planet Ocean Ultra Deep, a 46mm automatic watch with a white dial and 6,000m water resistance.

  • Condition: 94% (with faint marks on the sides and back of the case)
  • Case size: 46mm
  • Material: O-MEGASTEEL
  • Dial color: White
Posted at
Jun 13, 2025, 9:58 PM
Active
[WTS] Omega Seamaster Planet Ocean Chronograph 45.5mm Titanium 215.92.46.51.99.001!

Omega Seamaster Planet Ocean Chronograph 45.5mm Titanium 215.92.46.51.99.001!

A 45.5mm Omega Seamaster Planet Ocean Chronograph in titanium, featuring a grey dial and unidirectional rotating bezel.

  • Condition: Excellent pre-owned condition with typical cosmetic wear on the case and clasp
  • Case diameter: 45.5mm
  • Water resistance: 600 Meters depth rating
Posted at
Jun 13, 2025, 2:52 PM
Active
Omega Seamaster Planet Ocean 2201.50, fresh Omega Service, $3795 USD shipped CONUS only.

Omega Seamaster Planet Ocean 2201.50, fresh Omega Service, $3795 USD shipped CONUS only.

Omega - 2201.50 · $3,795.004
The Omega Seamaster Planet Ocean 2201.50 is a high-end dive watch featuring a 42mm diameter case and 20mm lugs. It boasts an impressive 600m water resistance and a fresh Omega service.

  • Condition: Excellent, with scratches in the AR coating of the crystal
  • Bracelet condition: Excellent
  • Water resistance: 600m
Posted at
Jun 11, 2025, 11:03 PM
Active
Omega Seamaster Planet Ocean 2201.50, fresh Omega Service, $3595 USD shipped CONUS only.

Omega Seamaster Planet Ocean 2201.50, fresh Omega Service, $3595 USD shipped CONUS only.

Omega - Planet Ocean 2201.50 · $3,595.004
A Planet Ocean 2201.50, a 42mm diameter watch with 600m water resistance and excellent condition except for minor scratches on the crystal.

  • Condition: Excellent with scratches in the AR coating of the crystal
  • Dimensions: 42mm diameter
  • Lugs: 20mm
  • Bracelet condition: Excellent (no stretch)
Posted at
Jun 11, 2025, 11:03 PM
Active
[WTS] Omega Seamaster Planet Ocean 2200.50

Omega Seamaster Planet Ocean 2200.50

Omega - 2200.50 · $2,350
A Omega Seamaster Planet Ocean in good condition, available for sale as watch only.

  • Condition: great condition with light scratches on crystal and bracelet
  • Payment Methods Accepted: crypto, cash, etc (except PayPal)
  • Trading Interested Brands: Tudor, Cartier, Rolex, Breitling, AP
Posted at
Jun 11, 2025, 3:40 PM
Active
[WTS] New 2025 Omega Seamaster Planet Ocean Ultra Deep 6000M Titanium 215.92.46.21.01.001

New 2025 Omega Seamaster Planet Ocean Ultra Deep 6000M Titanium 215.92.46.21.01.001

The watch being listed is a brand new Omega Seamaster Planet Ocean Ultra Deep 6000M Titanium model, featuring a sand blasted Grade 5 Titanium case and brushed black ceramic bezel. It has an automatic movement with 60-hour reserve and 6000M water resistance.

  • Condition: 10/10, unworn, new
  • Case Size: 45.5mm
  • Movement: 8912
  • Crystal Type: Domed Sapphire Crystal
Posted at
Jun 11, 2025, 1:03 PM
Active
Omega Seamaster Planet Ocean 600M | 2024 | Titanium | Full Set | OBO | 215.90.44.21.99.001| Warranty 2029

Omega Seamaster Planet Ocean 600M | 2024 | Titanium | Full Set | OBO | 215.90.44.21.99.001| Warranty 2029

Omega - 215.90.44.21.99.001 · £6,395.006
The Omega Seamaster Planet Ocean 600M is a titanium watch with a 43.5mm diameter, brushed grey ceramic unidirectional bezel, and sandblasted grade 5 titanium dial.

  • Condition: Used but in excellent condition
  • Case material: Grade 5 titanium
  • Diameter: 43.5mm
  • Thickness: ~16.1mm
Posted at
Jun 11, 2025, 11:09 AM
Active