Omega Seamaster Planet Ocean 600M 232.30.46.21.01.001

Professional Dive Watch Engineering with Classic Planet Ocean Presence

The Omega Seamaster Planet Ocean 600M, reference 232.30.46.21.01.001, represents the more substantial side of Omega's professional diving collection. With its 45.5 millimeter stainless steel case, black dial, matching dive bezel, and impressive 600 meter water resistance, this is a Seamaster built around serious capability and unmistakable wrist presence.

Inside is Omega's in-house Caliber 8500, an automatic Co-Axial movement featuring twin barrels, approximately 60 hours of power reserve, and an independently adjustable hour hand. Its exhibition caseback provides a view of the movement, adding a welcome mechanical dimension to an otherwise purpose-driven dive watch.

This 2020 example presents in excellent overall condition with little to no visible wear. It includes its stainless steel bracelet with diving extension and removed links, along with its boxes, cards, literature, and accessories. The inner presentation box does show some deterioration to its exterior covering, which is disclosed below.

At A Glance

• Reference: 232.30.46.21.01.001
• Condition: Excellent
• Card Date: 2020
• Case Material: Stainless steel
• Case Size: 45.5 millimeter
• Dial: Black
• Movement: Omega Caliber 8500 automatic Co-Axial
• Power Reserve: Approximately 60 hours
• Water Resistance: 600 meters
• Bracelet: Omega stainless steel with diving extension
• Set Contents: Box, cards, literature and accessories
• Highlight: 600M professional diver with in-house Co-Axial movement

Condition

The watch is running well and presents in excellent overall condition with little to no visible wear. The stainless-steel case and bracelet present very well, retaining the clean appearance of a carefully maintained example. The inner presentation box does show deterioration to its leather covering, with peeling visible in certain areas. This is cosmetic wear to the box and does not affect the watch itself.

Please review all photographs carefully, as they form part of the condition description and accurately represent the watch and accompanying accessories.

Included With Watch

Included with the watch are the inner box, outer box, warranty card dated 2020, pictogram card, card holder, manual, travel pouch, hangtag, and Omega stainless steel bracelet with diving extension and removed links.

Why We Like It

The Planet Ocean has always occupied a distinctive position within Omega's dive watch lineup. While the Seamaster Diver 300M balances professional diving capability with everyday versatility, the Planet Ocean leans further into the instrument-watch side of things. This 45.5-millimeter reference captures that philosophy particularly well. The case is substantial, the dial is highly legible, and the 600-meter water resistance doubles the depth rating of the standard Diver 300M. Add the helium escape valve, unidirectional rotating dive bezel, and robust stainless steel bracelet with diving extension, and you have a watch engineered with serious underwater capability in mind.

Of course, most owners will never take a Planet Ocean anywhere near its rated depth. Much of the appeal comes from knowing the engineering is there, even when the watch spends most of its time above the surface. There's also a compelling mechanical story behind this generation. Omega's Caliber 8500 marked an important chapter in the brand's development of its modern in-house movement architecture. Built around the Co-Axial escapement, it uses twin mainspring barrels to deliver approximately 60 hours of power reserve, along with an independently adjustable local hour hand.

That last feature is particularly useful for travel. Rather than stopping the movement or disturbing the minute hand, the wearer can adjust the hour hand independently when changing time zones. It's a practical detail that gives this substantial dive watch an additional layer of everyday versatility. The exhibition caseback offers a view of the movement, including its distinctive finishing, providing a contrast to the functional design of the exterior.

This particular configuration keeps the appearance traditional. The black dial and bezel offer excellent legibility, while the stainless-steel bracelet reinforces the Planet Ocean's professional tool-watch identity. Without bright accents or unconventional materials, the design feels purposeful and enduring. At 45.5 millimeters, this isn't a watch intended to disappear on the wrist. It's built for someone who appreciates the presence of a substantial mechanical diver, with the technical credentials to support its dimensions.

For the collector who enjoys the Seamaster family but wants greater depth capability, a larger case, and a stronger instrument-watch personality, the Planet Ocean 600M remains a particularly compelling choice.

Full Specifications

• Brand: Omega
• Model: Seamaster Planet Ocean 600M
• Reference Number: 232.30.46.21.01.001
• Original MSRP: $6,200
• Movement: Omega Caliber 8500
• Movement Type: Automatic Co-Axial
• Case Material: Stainless steel
• Case Size: 45.5 millimeter
• Water Resistance: 600 meters
• Power Reserve: Approximately 60 hours
• Dial: Black
• Bezel: Unidirectional rotating dive bezel
• Crystal: Sapphire
• Caseback: Exhibition sapphire
• Card Date: 2020
• Bracelet: Omega stainless steel with diving extension
• Lug Width: 22 millimeter
• Set Contents: Inner box, outer box, warranty card, pictogram card, card holder, manual, travel pouch and hangtag
• Location: Fort Worth, Texas

The Arieli Collection Difference

Every watch we offer is carefully inspected and accurately represented, with clear communication and a collector-first approach from start to finish. We offer fully insured overnight shipping within the United States, approved international delivery, and are always happy to provide additional photos or videos upon request.

As this watch is no longer covered by its original factory warranty, it includes our 12-month in-house mechanical warranty covering the movement and mechanical function of the watch under normal use. Beyond the warranty period, you'll also have access to our trusted watchmakers at fair, collector-friendly rates should service ever be needed.

Secure checkout. Payment instructions will be provided after order submission. Wire transfer is preferred. Additional processing fees apply to credit card and cryptocurrency payments.