Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 20 Sapphires

Reference 2903.50.38

Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 20 Sapphires

About this watch

The Omega Seamaster Planet Ocean 2903.50.38 is a masterpiece of engineering and design, blending precision, style, and functionality in a single timepiece. With its stunning blue dial adorned with mother of pearl, this watch shines beautifully in the light. The bold 45.5 mm case diameter makes a statement on the wrist, while the gem-set bezel adds a touch of elegance and luxury. The combination of white gold and stainless steel ensures durability, making it perfect for both casual wearers and collectors alike. With its exceptional movement, robust water resistance, and sleek design, this watch effortlessly transitions from a dive watch to a sophisticated accessory for formal occasions. Whether you're in a business meeting or enjoying a weekend getaway, the Seamaster Planet Ocean complements any outfit with its versatility and style. As an investment, this timepiece offers superior craftsmanship, iconic design, and robust movement, making it a smart buy in the long run. Omega watches hold their value remarkably well, ensuring that this watch remains a valuable possession for years to come.
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Key Features

  • Omega caliber 2500 automatic movement
  • 600m water resistance with sapphire crystal
  • 45.5mm white gold and stainless steel case diameter
  • 22mm lug width for comfortable wear
  • Blue dial with mother of pearl finish and mixed indexes
  • Gem-set bezel for added elegance and luxury
  • Sapphire glass for scratch-resistant protection

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 20 Sapphires
Reference
2903.50.38
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
45.5mm
Dial Color
Blue
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

Omega - 215.30.46.51.01.001 · $6,525
This Omega Seamaster Planet Ocean Chrono is a high-end diver's watch featuring a black dial and 600m depth rating.

  • Condition: Fantastic condition with minor hairlines
  • Case size: 45.5mm diameter
  • Water resistance: 600m
Posted at
May 23, 2026, 5:26 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 232.30.38.20.01.001 38mm Box and Papers - $2,990

Omega Seamaster Planet Ocean 232.30.38.20.01.001 38mm Box and Papers - $2,990

Omega - 232.30.38.20.01.001 · $2,990
Up for sale is my Omega Seamaster Planet Ocean 232.30.38.20.01.001, a 38mm automatic watch with an Omega 8520 movement.

  • Condition: Great condition for its age, minimal marks/hairlines
  • Case Size: 38mm diameter
  • Movement: Omega 8520, automatic
  • Bracelet Length: fits up to 7-7.25 inch wrists depending on wrist shape
Posted at
May 22, 2026, 4:13 AM
Active
View listing on r/WatchExchange
[WTS] 2024 Omega Seamaster Planet Ocean 600M 43.5mm Black 232.30.44.22.01.001 Full Set - $4,595

2024 Omega Seamaster Planet Ocean 600M 43.5mm Black 232.30.44.22.01.001 Full Set - $4,595

Omega - 232.30.44.22.01.001 · $4,595
Up for sale is a Omega Seamaster Planet Ocean 600M 43.5mm Black, reference 232.30.44.22.01.001 from 2024.

  • Condition: Excellent condition with minimal signs of wear
  • Year: 2024
  • Case size: 43.5mm
  • Depth rating: 600m
Posted at
May 21, 2026, 7:37 PM
Active
View listing on r/WatchExchange
[WTS] 2019 Omega Seamaster Planet Ocean 600M 43.5mm Black 215.30.44.21.01.001 Full Set - $4,595

2019 Omega Seamaster Planet Ocean 600M 43.5mm Black 215.30.44.21.01.001 Full Set - $4,595

Omega - 215.30.44.21.01.001 · $4,595
A black Omega Seamaster Planet Ocean 600M in excellent condition, available for sale.

  • Condition: Excellent condition with minimal signs of wear
  • Case size: 43.5mm
  • Depth rating: 600m
Posted at
May 21, 2026, 7:35 PM
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 · $4,375
Up for sale is an Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm.

  • Condition: Fantastic with minor hairlines on case, clasp, or bracelet
  • Case Size: 45.5mm diameter
  • Depth Rating: 600m
Posted at
May 21, 2026, 6:19 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 37.5mm

Omega Seamaster Planet Ocean 37.5mm

Omega - 232.90.38.20.03.001 · $3,600
This Omega Seamaster Planet Ocean is a 37.5mm titanium watch that feels proportionate on smaller wrists while maintaining its character.

  • Condition: Honest wearable condition with minor marks on the bezel and crown
  • Movement: Omega 8520 Co-Axial Chronometer
  • Power reserve: 50 hours
  • Case material: Grade 5 Titanium
Posted at
May 21, 2026, 12:45 AM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 600M Ultra Deep | Complete set + more

Omega Seamaster Planet Ocean 600M Ultra Deep | Complete set + more

Omega - 215.30.46.21.03.001 · $8,250
This Omega Seamaster Planet Ocean 600M Ultra Deep is a high-end dive watch with impressive features and a rich history.

  • Condition: Excellent sparingly worn condition
  • Authenticity guarantee: 100% guaranteed authentic
  • Shipping: Fully insured FedEx Overnight Priority shipping
  • Includes: Original bracelet, rubber strap, warranty card
Posted at
May 20, 2026, 6:56 PM
Active
View listing on r/WatchExchange
[WTS] 2020 Omega Seamaster Planet Ocean 600m Full Set $3850

2020 Omega Seamaster Planet Ocean 600m Full Set $3850

Omega - 232.30.46.21.01.001 · $3,850
This Omega Seamaster Planet Ocean 600M is a professional dive watch with incredible wrist presence, clean design, and exceptional reliability.

  • Movement: Omega Calibre 8500 automatic
  • Case size: 45.5MM diameter
  • Depth rating: 600M / 2000FT
Posted at
May 19, 2026, 9:45 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 2201.50 42mm - $2,990

Omega Seamaster Planet Ocean 2201.50 42mm - $2,990

Omega - 2201.50 · $2,990
The Omega Seamaster Planet Ocean 2201.50 is a 42mm automatic watch featuring an Omega Calibre 2500 movement.

  • Condition: Great condition for its age
  • Case size: 42mm diameter
  • Bracelet length: fits up to 7.25-7.5inch wrists depending on wrist shape
  • Movement: automatic Omega Calibre 2500
Posted at
May 19, 2026, 9:02 PM
Active
View listing on r/WatchExchange