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

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

Omega - 2201.50 · $2,990

Up for sale is my great condition Omega Seamaster Planet Ocean 2201.50, measuring at 42mm with an automatic Omega Calibre 2500 movement.

Condition: Very good condition for its age
Movement: Calibre 2500
Bracelet size: original Omega steel bracelet
Case condition: 8.9/10

Posted at

Mar 22, 2026, 11:08 PM

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Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - 215.30.46.51.01.001 - Full Set

Omega - 215.30.46.51.01.001 · $6,600

This Omega Seamaster Planet Ocean 600m features a black dial and 45.5mm case size, perfect for diving or everyday wear.

Condition: Fantastic condition, minor hairlines
Case Size: 45.5mm diameter

Posted at

Mar 22, 2026, 9:40 AM

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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 features a 45.5mm case, offering a large and stylish design. The watch is still under warranty until November 2027.

Condition: exceptional condition
Case size: 45.5mm diameter
Warranty valid until: November 2027

Posted at

Mar 21, 2026, 11:22 PM

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Omega Seamaster Planet Ocean 600m 45.5mm 232.30.46.21.01.002 FULL SET

Omega - 232.30.46.21.01.002 · $3,375

This Omega Seamaster Planet Ocean is a 45.5mm watch with a 600m depth rating.

Condition: Pre-owned, polished
Diameter: 45.5mm
Depth Rating: 600m

Posted at

Mar 21, 2026, 7:30 PM

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OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 - COMPLETE SET! 🔥$4,150🔥

OMEGA - 232.32.42.21.01.003 · $4,150

The OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 is a robust and elegant dive watch that embodies OMEGA's commitment to ocean exploration and precision engineering.

Condition: VERY GOOD, with few superficial scratches on case
Movement: Co-Axial Caliber 8500
Water resistance: 600m (2000 feet)
Case material: stainless steel

Posted at

Mar 21, 2026, 7:09 PM

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Omega Seamaster Planet Ocean 600m 42mm, 232.30.42.21.01.003 with black dial, (orange 6, 9, 12), w/ box & papers

Omega - 232.30.42.21.01.003 · $4,100

The Omega Seamaster Planet Ocean 600m 42mm features a classic dive watch design with a black dial, orange numerals, and stainless steel bracelet.

Condition: Excellent, previously cherished condition
Case diameter: 42mm
Water resistance: 600m
Bracelet size capacity: up to 7.5" wrist

Posted at

Mar 19, 2026, 1:35 PM

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

Omega - 2201.50 · $2,990

Up for sale is my great condition Omega Seamaster Planet Ocean 2201.50, measuring at 42mm with an automatic Omega Calibre 2500 movement.

Condition: Very good condition for its age with minimal marks/hairlines
Case size: 42mm diameter
Movement: Omega Calibre 2500
Bracelet type: original Omega steel bracelet

Posted at

Mar 19, 2026, 4:52 AM

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Omega Seamaster Planet Ocean 600M – 42mm Titanium – 2025 Set

Omega - 232.90.42.21.03.001 · $5,350

The Omega Seamaster Planet Ocean 600M features a titanium 42mm case and bracelet, with a blue ceramic bezel and dial.

Condition: Mint condition
Case Size: 42mm diameter
Water Resistance: 600m / 2000ft
Movement: Omega Calibre 8500

Posted at

Mar 18, 2026, 3:33 PM

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Omega Seamaster Planet Ocean - 2200.50

Omega - 2200.50 · $3,300

This Omega Seamaster Planet Ocean ref. 2200.50 is the classic Co-Axial model powered by Omega caliber 2500, featuring a black dial and black bezel, along with sapphire crystal and 600m water resistance.

Condition: Pre-owned with scratches on AR coating
Water Resistance: 600m
Case Size: 45.5mm diameter
Movement: Omega caliber 2500 (Co-Axial)

Posted at

Mar 18, 2026, 10:18 AM

Active

View listing on r/WatchExchange