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

Reference 232.18.38.20.01.001

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 600m Worldtimer | 45.5mm Ceramic Diver | ref. 215.92.46.22.01.007

Omega Seamaster Planet Ocean 600m Worldtimer | 45.5mm Ceramic Diver | ref. 215.92.46.22.01.007

Omega - 215.92.46.22.01.007 · $11,850
A complete Omega Seamaster Planet Ocean 600m Worldtimer with a 45.5mm ceramic case, featuring a worldtimer function and 600m depth rating.

  • Condition: 10/10
  • Case Size: 45.5mm diameter
  • Depth Rating: 600m
Posted at
Dec 15, 2025, 4:26 PM
Active
[WTS] OMEGA Seamaster Planet Ocean 6000M "Ultra Deep" Summer Blue Ref. 215.30.46.21.03.002 - ULTIMATE SET!

OMEGA Seamaster Planet Ocean 6000M "Ultra Deep" Summer Blue Ref. 215.30.46.21.03.002 - ULTIMATE SET!

OMEGA - 215.30.46.21.03.002 · $12,500
The OMEGA Seamaster Planet Ocean 6000M 'Ultra Deep' Ref. 215.30.46.21.03.002 is a commercially available version of the deep-sea watch originally developed for the Five Deeps Expedition, featuring a massive 45.5mm case made from high-grade stainless steel and powered by the Co-Axial Master Chronometer Calibre 8912.

  • Condition: UNWORN
  • Material: O-MEGASTEEL
  • Water resistance: 6000m (20,000ft)
  • Diameter: 45.5mm
Posted at
Dec 14, 2025, 11:57 PM
Active
[WTS][WTT] Omega Seamaster Planet Ocean 600M - Skyfall Limited Edition - w/ Omega Service *Price Drop*

[WTT] Omega Seamaster Planet Ocean 600M - Skyfall Limited Edition - w/ Omega Service *Price Drop*

This Omega Seamaster Planet Ocean 600M is a limited edition Skyfall model, featuring a black dial and 42mm case size. The watch has been recently serviced by Omega and comes with service receipt and removed parts.

  • Condition: Pre-owned, recently serviced by Omega in August (service receipt included)
  • Movement: Omega's in-house caliber 8507b with silicon balance spring for increased anti-magnetic properties
  • Water resistance: 600 meters (2000 feet)
  • Bracelet size: Sized to 7 inch wrist, with additional links included
Posted at
Dec 14, 2025, 2:46 PM
Active
[wts] Omega Seamaster Planet Ocean Black 8900 43.5mm 215.30.44.21.01.001 under warranty

Omega Seamaster Planet Ocean Black 8900 43.5mm 215.30.44.21.01.001 under warranty

This Omega Seamaster Planet Ocean Black is a 43.5mm watch with a factory warranty valid until AUG 2029, accompanied by boxes and papers.

  • Condition: Excellent
  • Case size: 43.5mm
Posted at
Dec 13, 2025, 6:58 PM
Active
[wts] Omega Seamaster Planet Ocean 8500 45.5mm 232.30.46.21.01.003 under warranty

Omega Seamaster Planet Ocean 8500 45.5mm 232.30.46.21.01.003 under warranty

This listing is for an Omega Seamaster Planet Ocean 8500 in exceptional condition, under warranty.

  • Condition: exceptional
  • Warranty Valid Until: November 2027
Posted at
Dec 13, 2025, 6:50 PM
Active
[wts] Omega Seamaster Planet Ocean Titanium 232.90.46.21.03.001 45.5mm under warranty dial😍😍

Omega Seamaster Planet Ocean Titanium 232.90.46.21.03.001 45.5mm under warranty dial😍😍

This Omega Seamaster Planet Ocean is a 45.5mm titanium watch under warranty, with a factory warranty valid until November 2027.

  • Condition: Excellent condition
  • Case Material: Titanium
  • Size: 45.5mm diameter
Posted at
Dec 13, 2025, 6:48 PM
Active
[WTS] Omega Seamaster Planet Ocean GoodPlanet GMT 44mm Blue Dial 232.32.44.22.03.001

Omega Seamaster Planet Ocean GoodPlanet GMT 44mm Blue Dial 232.32.44.22.03.001

The Omega Seamaster Planet Ocean GoodPlanet is a 43.5mm dive watch with a deep blue dial, ceramic bezel, and GMT hand for tracking a second time zone.

  • Condition: Excellent pre-owned condition
  • Case size: 43.5mm diameter
  • Water resistance: unknown
Posted at
Dec 12, 2025, 11:57 PM
Active
2021 Omega Seamaster Planet Ocean �Oreo� GMT -215.30.44.22.01.001 - BPs + Extra

2021 Omega Seamaster Planet Ocean �Oreo� GMT -215.30.44.22.01.001 - BPs + Extra

2021 Omega Seamaster Planet Ocean 'Oreo' GMT is a luxury watch with minor wear on the case.

  • Condition: Very Good Condition
  • Case Wear: Minor
  • Box Condition: Outer white box flap is loose
  • Accessories: Double Box,All 3 Omega Cards (Warranty dated 6/8/21),Hangtag, Manual, Customer Service papers,Extra Black/white Rubber Strap
Posted at
Apr 4, 2025, 3:36 PM
Active
Omega SEAMASTER PLANET OCEAN 600M STEEL SUMMER BLUE DIAL 39.5MM 2024 FULL SET

Omega SEAMASTER PLANET OCEAN 600M STEEL SUMMER BLUE DIAL 39.5MM 2024 FULL SET

This is a 2024 Omega Seamaster Planet Ocean 600m in stainless steel with a blue ceramic bezel and brushed ceramic blue gradient dial.

  • Condition: Excellent, unpolished condition
  • Movement: Co-Axial Master Chronometer calibre 8900
  • Water resistance: 600m
  • Diameter: 39.5mm
Posted at
Apr 3, 2025, 9:35 PM
Active