Case #545 — Omega Planet Ocean Chronograph Ref. 215.30.46.51.01.001

Case #545 — Omega Planet Ocean Chronograph Ref. 215.30.46.51.01.001

Status: Available
Condition: Very Good Pre-Owned
Scope: Pictogram Card, Master Chronometer Card, Hang Tag, and Presentation Box

🔎 Case Notes

There are dive watches, and then there is the Planet Ocean Chronograph.

At 45.5 mm, this is unapologetically a substantial watch. The broad stainless-steel case, black ceramic bezel, substantial bracelet, oversized pushers, and deep black dial give it tremendous wrist presence before one even gets to the specification underneath.

And the specification is formidable: 600 meters of water resistance, a helium escape valve, METAS Master Chronometer certification, and Omega’s Co-Axial Calibre 9900 automatic chronograph movement.

This example presents in very good pre-owned condition and has the considerable advantage of a recent full service. It is accompanied by its Omega pictogram card, Master Chronometer card, hang tag, and a non-Omega presentation box.

The stainless-steel bracelet is currently sized for approximately a 7¼–7½-inch wrist. Production date is presently unconfirmed.

🕰️ The Evidence

• Reference: 215.30.46.51.01.001
• Model: Seamaster Planet Ocean 600M Co-Axial Master Chronometer Chronograph
• Year: Unknown
• Case: Stainless Steel
• Case Diameter: 45.5 mm
• Lug Width: 22 mm
• Dial: Black
• Crystal: Sapphire
• Bezel: Unidirectional Black Ceramic
• Crown: Screw-Down
• Helium Escape Valve: Yes
• Caseback: Sapphire Exhibition
• Movement: Omega Co-Axial Master Chronometer Calibre 9900 ( recent full service)
• Movement Type: Automatic Chronograph
• Certification: METAS Master Chronometer
• Power Reserve: Approximately 60 Hours
• Frequency: 28,800 VPH
• Functions: Hours, Minutes, Small Seconds, Chronograph, Date
• Water Resistance: 600 meters / 2,000 feet
• Bracelet: Stainless Steel
• Bracelet Fit: Approximately 7¼–7½-inch wrist
• Condition: Very Good Pre-Owned
• Service: Recent Full Service
• Included: Omega Pictogram Card, Master Chronometer Card, Hang Tag, and Non-Omega Presentation Box

🌟 Collector Provenance

The Planet Ocean sits at the more uncompromising end of Omega’s Seamaster family.

Where the Diver 300M balances professional diving capability with everyday proportions, the Planet Ocean pushes further into genuine saturation-diving territory. In chronograph form, that philosophy reaches its most substantial expression.

The 45.5 mm case and 600-meter rating are not styling exercises. They are part of a watch engineered around extreme water resistance while still accommodating a fully integrated automatic chronograph movement.

That makes the 215.30.46.51.01.001 one of the more technically ambitious mainstream sports watches Omega produced during this generation.

🌟 Technical Provenance

Inside is Omega’s Calibre 9900, a twin-barrel Co-Axial chronograph movement certified by METAS as a Master Chronometer.

The movement provides approximately 60 hours of power reserve and combines the chronograph’s elapsed hours and minutes into the register at 3 o’clock, allowing the display to be read more intuitively like a second clock face.

It is visible through the sapphire exhibition back—an unusual feature on a watch simultaneously rated to 600 meters.

That combination of deep-water capability, chronograph functionality, Master Chronometer certification, and visible mechanical finishing captures what makes this generation of Planet Ocean technically distinctive.

🧾 From the Case File

This is a large watch, and that is central to its appeal.

At 45.5 mm, the Planet Ocean Chronograph occupies real space on the wrist. The broad bracelet and substantial case architecture reinforce that scale, giving it a presence that the standard three-hand Planet Ocean simply cannot duplicate.

Yet the size supports genuine capability: a 600-meter rating, helium escape valve, ceramic timing bezel, automatic chronograph, and Master Chronometer movement.

For a pre-owned example, the recent full service is particularly valuable. A complicated automatic chronograph of this caliber represents a significant maintenance consideration, and having that work recently completed removes a major variable for the next owner.

The accessories are accurately represented rather than overstated: this watch includes the Omega pictogram and Master Chronometer cards plus hang tag, accompanied by a non-Omega presentation box.

🗝️ BST Verdict

A serious piece of Omega engineering with equally serious wrist presence.

The Planet Ocean Chronograph combines 45.5 mm proportions, 600-meter capability, a Master Chronometer chronograph movement, and one of Omega’s most substantial bracelet-and-case packages.

This example adds the important practical advantage of a recent full service while presenting in very good pre-owned condition.

For someone who wants a Seamaster that makes no attempt to disappear on the wrist, this is the one.

👉 Every case deserves a closer look.