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

Reference 232.18.46.21.01.001

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

About this watch

The Omega Seamaster Planet Ocean 232.18.46.21.01.001 is a statement piece that combines craftsmanship, durability, and luxury in one timepiece. The 45.5mm stainless steel case feels solid and luxurious on the wrist, while the black dial with mixed indexes offers striking contrast and readability. The gem-set bezel adds opulence, making this watch perfect for both diving expeditions and formal events. At its core is the Omega Caliber 8500 movement, a marvel of engineering with a Co-Axial escapement that reduces friction and enhances accuracy. With a water resistance rating of 600 meters, this watch is designed for serious divers who demand precision and reliability. The alligator leather strap adds sophistication and comfort, while the deployment clasp ensures security. This timepiece is an investment in both style and reliability, perfect for those willing to invest in a piece of art that tells a story.
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MSRP: $19,500
Market Price: $7,392

Key Features

  • Omega Caliber 8500 movement with Co-Axial escapement
  • 600m water resistance rating
  • 45.5mm stainless steel case
  • Black dial with mixed indexes and gem-set bezel
  • Alligator leather strap with deployment clasp
  • Chronometer certification for precision timekeeping
  • Sapphire crystal for durability

Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Diamond / Black / Alligator
Reference
232.18.46.21.01.001
Movement
8500
Movement Features
  • Hours, Minutes, Seconds
  • Date
  • Chronometer, Co-Axial Escapement
Case
Stainless Steel 45.5mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[WTS] Omega Seamaster Planet Ocean 600M 42mm | 232.30.42.21.01.003 | 2023 Full Set

Omega Seamaster Planet Ocean 600M 42mm | 232.30.42.21.01.003 | 2023 Full Set

Omega - 232.30.42.21.01.003 · $3,950
This Omega Seamaster Planet Ocean 600M features the in-house Omega Co-Axial Caliber 8500 automatic movement, ceramic bezel, and impressive 600 meters of water resistance.

  • Condition: Excellent Condition
  • Movement: in-house Omega Co-Axial Caliber 8500
  • Depth rating: 600m
Posted at
May 25, 2026, 6:20 PM
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[WTS] Omega Seamaster Planet Ocean 232.30.46.21.01.001 – 45.5mm – 2015 – Full Set - 3550

Omega Seamaster Planet Ocean 232.30.46.21.01.001 – 45.5mm – 2015 – Full Set - 3550

Omega - 232.30.46.21.01.001 · $3,550
A bold dive watch with strong wrist presence, built for durability and performance, with a black dial and Omega's proven Co-Axial movement.

  • Condition: Good overall condition
  • Case size: 45.5mm diameter
  • Movement: Omega Co-Axial automatic movement
Posted at
May 25, 2026, 11:54 AM
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[WTS] 2026 Omega Seamaster Planet Ocean 600M Black Dial Box Papers + OEM Bracelet!

2026 Omega Seamaster Planet Ocean 600M Black Dial Box Papers + OEM Bracelet!

Omega - 217.30.42.21.01.001 · $7,300
2026 Omega Seamaster Planet Ocean 600M in excellent like-new condition, comes with inner & outer box, warranty card, and manual.

  • Condition: Excellent like-new condition
  • Box Papers: yes, inner & outer box, warranty card, and manual
  • Bracelet: stainless steel
  • Strap: rubber
Posted at
May 24, 2026, 10:36 AM
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[wts] Omega Seamaster Planet Ocean GMT 43.5mm 232.32.44.22.01.002 UnderWarranty

Omega Seamaster Planet Ocean GMT 43.5mm 232.32.44.22.01.002 UnderWarranty

Omega - 232.32.44.22.01.002 · $4,600
This Omega Seamaster Planet Ocean GMT is a 43.5mm watch with a factory warranty valid through November 2027.

  • Condition: Excellent condition
  • Diameter: 43.5mm
Posted at
May 23, 2026, 8:28 AM
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[wts] Omega Seamaster Planet Ocean 8500 232.30.46.21.01.001 45.5mm

Omega Seamaster Planet Ocean 8500 232.30.46.21.01.001 45.5mm

Omega - 232.30.46.21.01.001 · $4,500
A 45.5mm Omega Seamaster Planet Ocean with a full set.

  • Condition: Excellent condition and full set
  • Case Size: 45.5mm
Posted at
May 23, 2026, 8:22 AM
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[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
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[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
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[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
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[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
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