Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Blue / Black / Bracelet

Reference 217.30.42.21.01.002

Omega Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Blue / Black / Bracelet

About this watch

The Omega Seamaster Planet Ocean 600M 42 mm 217.30.42.21.01.002 debuted in 2025. It features a 42 mm stainless steel case with polished and brushed surfaces, fitted with a flat sapphire crystal featuring anti-reflective treatment on both sides. Water resistance is rated at 600 meters (60 bar). The screw-in case back is executed in grade 5 titanium and is engraved with the Omega seahorse emblem. This version pairs the matte black dial with a polished blue ceramic bezel ring carrying a diving scale in white enamel; the inner ring is made from polished grade 5 titanium. The dial is fitted with rhodium-plated hands and indexes filled with white Super-LumiNova, along with four white Arabic numerals. Inside ticks the Omega Co-Axial Master Chronometer caliber 8912. The movement operates at 3.5 Hz, uses twin barrels mounted in series, and provides a power reserve of approximately 60 hours. A free-sprung balance with a silicon balance spring ensures resistance to magnetic fields up to 15,000 gauss. The watch is delivered on a polished-brushed stainless steel bracelet equipped with an extendable foldover rack-and-pusher clasp and an additional diver extension.
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Specifications

Brand
Omega
Family
Seamaster Planet Ocean
Model
Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel - Blue / Black / Bracelet
Reference
217.30.42.21.01.002
Movement
8912
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer, Co-Axial Escapement
Case
42mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
600

Current Listings

[wts] Omega Seamaster Planet Ocean Chronograph 45.5mm 232.30.46.51.01.001

Omega Seamaster Planet Ocean Chronograph 45.5mm 232.30.46.51.01.001

Omega - 232.30.46.51.01.001 · $4,500
This Omega Seamaster Planet Ocean Chronograph is a 45.5mm watch, featuring a chronograph function.

  • Condition: Excellent condition and full set
  • Case diameter: 45.5mm
Posted at
May 16, 2026, 10:09 PM
Active
View listing on r/WatchExchange
[wts] Omega Seamaster Planet Ocean 45.5mm 232.32.46.21.01.005

Omega Seamaster Planet Ocean 45.5mm 232.32.46.21.01.005

Omega - 232.32.46.21.01.005 · $4,500
A Omega Seamaster Planet Ocean watch with a 45.5mm case size, featuring the 8500 movement.

  • Condition: great condition
  • Case size: 45.5mm diameter
  • Movement: 8500
Posted at
May 16, 2026, 10:07 PM
Active
View listing on r/WatchExchange
[wts] Omega Seamaster Planet Ocean Titanium 232.90.46.21.03.001 45.5mm

Omega Seamaster Planet Ocean Titanium 232.90.46.21.03.001 45.5mm

Omega - 232.90.46.21.03.001 · $4,600
This Omega Seamaster Planet Ocean 232.90.46.21.03.001 is a titanium model with a 45.5mm case size.

  • Condition: Excellent condition
  • Case size: 45.5mm diameter
Posted at
May 16, 2026, 10:03 PM
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 · $6,550
This Omega Seamaster Planet Ocean Chrono features a black dial, 45.5mm case and 600m water resistance.

  • Condition: Fantastic with minor hairlines
  • Case Size: 45.5mm diameter
  • Depth Rating: 600m
Posted at
May 16, 2026, 3:10 PM
Active
View listing on r/WatchExchange
[wts] Omega Seamaster Planet Ocean GMT Titanium 232.92.44.22.03.001 43.5mm under warranty

Omega Seamaster Planet Ocean GMT Titanium 232.92.44.22.03.001 43.5mm under warranty

Omega - 232.92.44.22.03.001 · $5,200
This Omega Seamaster Planet Ocean GMT Titanium is a 43.5mm watch with factory warranty valid through AUG 2027.

  • Condition: Excellent condition
  • Model: Seamaster Planet Ocean GMT Titanium
  • Size: 43.5mm diameter
Posted at
May 16, 2026, 12:57 PM
Active
View listing on r/WatchExchange
[wts] Omega Seamaster Planet Ocean 8500 Orange🍊 45.5mm 232.32.46.21.01.001

Omega Seamaster Planet Ocean 8500 Orange🍊 45.5mm 232.32.46.21.01.001

Omega - 232.32.46.21.01.001 · $4,500
This listing is for an Omega Seamaster Planet Ocean 8500, a watch with a 45.5mm case size.

  • Condition: Great
  • Case Diameter: 45.5mm
Posted at
May 16, 2026, 12:54 PM
Active
View listing on r/WatchExchange
[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
This Omega Seamaster Planet Ocean 8500 features a 45.5mm case size and is available for sale in excellent condition, complete with all original accessories.

  • Condition: Excellent condition
  • Size: 45.5mm diameter
  • Case material: unknown
Posted at
May 15, 2026, 2:44 PM
Active
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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
This Omega Seamaster Planet Ocean GMT features a 43.5mm case and is available with its original boxes and papers.

  • Condition: Excellent
  • Case Diameter: 43.5mm
Posted at
May 15, 2026, 2:41 PM
Active
View listing on r/WatchExchange
[WTS] Omega Seamaster Planet Ocean 600M – 232.92.42.21.03.001 – 42mm Titanium – $4,695

Omega Seamaster Planet Ocean 600M – 232.92.42.21.03.001 – 42mm Titanium – $4,695

Omega - 232.92.42.21.03.001 · $4,695
  • Case material: titanium
  • Case size: 42mm
Posted at
May 15, 2026, 9:16 AM
Active
View listing on r/WatchExchange