Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 37.5 Stainless Steel / Diamond / Black / Alligator

Reference 232.18.38.20.01.001

Omega Seamaster Planet Ocean 600M Co-Axial 37.5 Stainless Steel / Diamond / Black / Alligator

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial is a true masterpiece, encapsulating the spirit of exploration while offering a refined aesthetic. This watch combines luxury with functionality, making it perfect for various individuals. Its stunning design features a black dial adorned with mixed indexes and arrow hands, adding a sophisticated touch that catches the light beautifully. The gem-set bezel elevates its luxurious appeal, making it a conversation starter wherever you go. At the heart of this exquisite watch lies the Omega caliber 8520, an automatic movement delivering exceptional accuracy. With a frequency of 25,200 vibrations per hour and chronometer certification, this watch meets stringent industry standards. Its impressive water resistance of 600 meters makes it perfect for underwater adventures or everyday wear and tear. The combination of stainless steel and sapphire glass ensures durability and scratch resistance. This timepiece is an investment offering incredible value, considering its intricate craftsmanship, high-quality materials, and the Omega brand's reputation in the watchmaking industry.
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Key Features

  • Automatic Omega caliber 8520 movement
  • Stainless Steel case with gem-set bezel
  • Sapphire crystal glass for durability and scratch resistance
  • Water Resistance: 600 meters
  • Black alligator strap for a classy aesthetic
  • Chronometer certification for exceptional accuracy
  • 50-hour power reserve

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 37.5 Stainless Steel / Diamond / Black / Alligator
Reference
232.18.38.20.01.001
Movement
8520
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 37.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[wts] Omega Seamaster Planet Ocean GMT GoodPlanet 232.30.44.22.03.001 43.5mm

Omega Seamaster Planet Ocean GMT GoodPlanet 232.30.44.22.03.001 43.5mm

Omega - 232.30.44.22.03.001 · $4,900
A 43.5mm Omega Seamaster Planet Ocean GMT GoodPlanet watch, in excellent condition, with boxes and papers.

  • Condition: Excellent condition
  • Diameter: 43.5mm
Posted at
May 23, 2026, 8:20 AM
Active
View listing on r/WatchExchange
[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