Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Diamond / Black / Alligator

Reference 222.18.42.20.01.001

Omega Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Diamond / Black / Alligator

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 42 is a masterpiece of watchmaking, blending stunning design with robust functionality. Its black dial, gem-set bezel, and alligator leather strap exude luxury and sophistication. The watch's impressive water resistance of up to 600 meters makes it perfect for diving enthusiasts, while its reliable and precise Omega Caliber 2500 movement ensures accuracy day after day. This timepiece is not just a watch; it's a statement that tells the world you appreciate quality, craftsmanship, and the finer things in life.
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Key Features

  • 42mm Stainless Steel Case
  • Gem-Set Bezel with Diamonds
  • Sapphire Crystal for Water Resistance up to 600m
  • Omega Caliber 2500 Automatic Movement
  • Date Function and Hours, Minutes, Seconds Display

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Diamond / Black / Alligator
Reference
222.18.42.20.01.001
Movement
2500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Co-Axial Escapement, Chronometer
Case
Stainless Steel 42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] Omega Seamaster Planet Ocean GMT “Oreo” - 215.30.44.22.01.001

Omega Seamaster Planet Ocean GMT “Oreo” - 215.30.44.22.01.001

Omega - 215.30.44.22.01.001 · $4,995
This Omega Seamaster Planet Ocean GMT features a 43.5mm case and is in very good condition with only light scratches on the clasp and bracelet.

  • Condition: Very good condition, minor wear
  • Size: 43.5mm diameter
Posted at
Dec 30, 2025, 1:27 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 600M 42mm Titanium Blue Dial Co-Axial Box Papers

Omega Seamaster Planet Ocean 600M 42mm Titanium Blue Dial Co-Axial Box Papers

Omega - 232.92.42.21.03.001 · $4,325
The Omega Seamaster Planet Ocean is a 42mm titanium dive watch with a blue ceramic bezel, powered by the Co-Axial Calibre 8500.

  • Condition: Excellent pre owned condition
  • Case material: Grade 2 titanium
  • Diameter: 42mm
  • Water resistance: 600m
Posted at
Dec 30, 2025, 9:14 AM
Active
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[WTS] 12 Days of Christmas 🎄 | Day 5/12 | Omega Seamaster Planet Ocean Titanium - 42mm 🌊

12 Days of Christmas 🎄 | Day 5/12 | Omega Seamaster Planet Ocean Titanium - 42mm 🌊

Omega - Planet Ocean · $5,500
A Omega Seamaster Planet Ocean Titanium in 42mm, this listing is part of a 12-day sale.

Posted at
Dec 29, 2025, 5:35 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 2200.51 2010 Full Set $2,999

Omega Seamaster Planet Ocean 2200.51 2010 Full Set $2,999

Omega - 2200.51 · $2,999
2010 Omega Seamaster Planet Ocean with box and cards, dated from 2010.

  • Condition: Good timegrapher numbers, last service unknown
  • Year: 2010
  • Set: Full set with box and cards
Posted at
Dec 29, 2025, 10:22 AM
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[WTS] Omega Seamaster Planet Ocean 2200.50 – 45.5mm Co-Axial – “Big Size” 💥 – $2,349 Shipped

Omega Seamaster Planet Ocean 2200.50 – 45.5mm Co-Axial – “Big Size” 💥 – $2,349 Shipped

Omega - 2200.50 · $2,349
This Omega Seamaster Planet Ocean is a 45.5mm Co-Axial watch that shows heavy, honest wear throughout. It has a dent on the crown side of the case and a missing bezel click spring.

  • Condition: Fair / well-used
  • Case size: 45.5mm
  • Bracelet size: 7.75-8.0 inches
  • Dial condition: clean
Posted at
Dec 28, 2025, 9:37 PM
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[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

Omega - 232.32.46.21.01.003 · $3,600
The Omega Seamaster Planet Ocean Orange features a 45.5mm case with a gray bezel, but was upgraded to an orange OEM bezel.

  • Condition: Near mint
  • Bracelet type: mesh/milanese bracelet
  • Original strap: black
  • Alternative clasp: deployant clasp
Posted at
Dec 27, 2025, 10:36 PM
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[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

Omega - 232.30.46.21.01.003 · $4,500
This Omega Seamaster Planet Ocean 8500 features a 45.5mm case and is still under warranty until November 2027.

  • Condition: exceptional
  • Case Diameter: 45.5mm
  • Warranty Valid Until: NOV 2027
Posted at
Dec 27, 2025, 10:21 PM
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[wts] Omega Seamaster Planet Ocean 2500 42.5mm 2209.50.00

Omega Seamaster Planet Ocean 2500 42.5mm 2209.50.00

Omega - 2209.50.00 · $3,400
This Omega Seamaster Planet Ocean 2500 is a 42.5mm watch with excellent condition and comes with boxes and papers.

  • Condition: Great condition with boxes and papers
  • Case Size: 42.5mm
Posted at
Dec 27, 2025, 10:16 PM
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[WTS] 2024 Omega Seamaster Planet Ocean 600M 43.5mm Steel 215.30.44.21.01.002 Full Set

2024 Omega Seamaster Planet Ocean 600M 43.5mm Steel 215.30.44.21.01.002 Full Set

Omega - 215.30.44.21.01.002 · $4,415
This listing features a 2024 Omega Seamaster Planet Ocean 600M, a high-end diver's watch made of stainless steel with a black ceramic dial.

  • Condition: Nice pre-owned condition with light scratches on the case and bracelet
  • Case material: Stainless Steel
  • Case dimensions: 43.5mm
  • Bezel: Rotating Dive Bezel with Black Ceramic & Orange Rubber Insert
Posted at
Dec 24, 2025, 5:43 PM
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