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

Reference 217.30.42.21.01.002

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 GMT “Oreo” - 215.30.44.22.01.001 - Price Reduced!

Omega Seamaster Planet Ocean GMT “Oreo” - 215.30.44.22.01.001 - Price Reduced!

This Omega Seamaster Planet Ocean GMT features a 43.5mm case size and has been well-maintained, showing only light scratches on the clasp and bracelet.

  • Condition: Very good, with minor wear
  • Size: 43.5mm diameter
  • Bracelet condition: Light scratches
Posted at
Feb 1, 2026, 4:58 PM
Active
[WTS] OMEGA Seamaster Planet Ocean 6000M Ultra Deep "Summer Blue" Ref. 215.30.46.21.03.002 - ULTIMATE SET! 🔥$12,250🔥

OMEGA Seamaster Planet Ocean 6000M Ultra Deep "Summer Blue" Ref. 215.30.46.21.03.002 - ULTIMATE SET! 🔥$12,250🔥

OMEGA - 215.30.46.21.03.002 · $12,250
This OMEGA Seamaster Planet Ocean 6000M Ultra Deep represents the pinnacle of deep-sea engineering, with a water-resistant case to 6,000 meters and powered by the Co-Axial Master Chronometer Calibre 8912.

  • Condition: UNWORN
  • Case material: O-MEGASTEEL (high-grade stainless steel)
  • Diameter: 45.5mm
  • Water resistance: 6000m / 20,000 feet
Posted at
Feb 1, 2026, 1:55 PM
Active
[WTS] OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 - COMPLETE SET! 🔥$4,150🔥

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

The OMEGA Seamaster Planet Ocean 600M 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
  • Case Size: 42mm
  • Movement: Co-Axial Caliber 8500
  • Water Resistance: 600m (2000ft)
Posted at
Feb 1, 2026, 1:54 PM
Active
[WTS] OMEGA SEAMASTER PLANET OCEAN 600M CERAMIC GMT 46MM - EXCELLENT - 215.92.46.22.01.004 - BOX/PAPERS

OMEGA SEAMASTER PLANET OCEAN 600M CERAMIC GMT 46MM - EXCELLENT - 215.92.46.22.01.004 - BOX/PAPERS

A powerhouse professional diver crafted in black ceramic, featuring 600m water resistance, GMT functionality, and Omega's Master Chronometer movement.

  • Condition: Excellent
  • Case size: 46mm diameter
  • Movement type: Automatic GMT
  • Water depth rating: 600m
Posted at
Feb 1, 2026, 10:44 AM
Active
[WTS] OMEGA SEAMASTER PLANET OCEAN 600M 44MM GREY - 215.32.44.21.01.002 - EXCELLENT - BOX/PAPERS

OMEGA SEAMASTER PLANET OCEAN 600M 44MM GREY - 215.32.44.21.01.002 - EXCELLENT - BOX/PAPERS

A professional-grade dive watch featuring a sleek grey dial, 600m water resistance and refined modern styling.

  • Condition: Excellent
  • Movement: Master Chronometer automatic movement
  • Case size: 44mm diameter
  • Water resistance: 600m
Posted at
Feb 1, 2026, 10:35 AM
Active
[WTS] Omega Seamaster Planet Ocean 600M GMT - Solid 18K Red Gold - Ref: 232.63.44.22.01.001

Omega Seamaster Planet Ocean 600M GMT - Solid 18K Red Gold - Ref: 232.63.44.22.01.001

Omega - 232.63.44.22.01.001 · $19,000
A heavy-hitter for any collector, this Omega Seamaster Planet Ocean 600M GMT in Solid 18K Red Gold features the Calibre 8615 movement with a solid gold balance bridge and a water resistance of 600m.

  • Case Diameter: 43.5mm
  • Material: Solid 18K Red Gold
  • Movement Type: Omega Co-Axial Calibre 8615
Posted at
Jan 31, 2026, 4:07 PM
Active
[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

This Omega Seamaster Planet Ocean Orange features a 45.5mm case with an orange bezel and is presented on an OEM mesh/milanese bracelet.

  • Condition: Near mint
  • Bracelet type: mesh/milanese
  • Case size: 45.5mm
Posted at
Jan 31, 2026, 4:06 AM
Active
[WTS] Omega Seamaster Planet Ocean (215.30.44.21.01.001)

Omega Seamaster Planet Ocean (215.30.44.21.01.001)

For sale is my Omega Seamaster Planet Ocean.

  • Model name: Seamaster Planet Ocean
Posted at
Jan 30, 2026, 5:44 PM
Active