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

Reference 232.15.42.21.01.001

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

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 42 is a masterpiece of luxury watchmaking. This stunning timepiece is designed for serious divers and watch enthusiasts alike, combining elegance with functionality. The case is crafted from high-quality stainless steel, giving it a robust yet refined look. With a diameter of 42mm, it finds the perfect balance between presence and wearability. The round shape is classic, ensuring that it never goes out of style, while the gem-set bezel adds a touch of extravagance that sets it apart from other diving watches. The black dial features mixed indexes and arrow hands that make reading the time a breeze. The layout is clean and practical, embodying the perfect blend of function and form. Whether you’re underwater or at a formal event, this watch makes an impression without being over the top. At the heart of the Seamaster Planet Ocean 600M lies the Omega caliber 8500, an in-house automatic movement that's nothing short of revolutionary. With two barrels providing a generous 60-hour power reserve, you won't have to worry about winding it frequently. The movement’s precision is further enhanced by its Co-Axial escapement, which reduces friction between components, ensuring longevity and accuracy. One of the standout features of this watch is its impressive water resistance of up to 600 meters (or 2,000 feet). Whether you’re a professional diver or just love the ocean, this watch is designed to withstand the pressures of deep-water exploration. With a helium escape valve and a screw-in crown, it’s ready for any aquatic adventure. The Seamaster Planet Ocean 600M comes with a stainless steel bracelet that feels as good as it looks. It’s sturdy yet comfortable, with a secure clasp that ensures it stays on your wrist no matter what you’re doing. Plus, the bracelet is adjustable, so you can find that perfect fit without any hassle. This watch is incredibly versatile. Dress it up for a formal event or wear it casually on a weekend adventure. The black dial and stainless steel bracelet can easily complement a suit or a t-shirt and shorts. You’ll find yourself reaching for it time and time again.

Buy Now on Jomashop

This is an affiliate link

MSRP: $17,200

Market Price: $6,960

Key Features

Omega caliber 8500 in-house automatic movement
600 meter water resistance
42mm diameter stainless steel case
Gem-set bezel with black dial
Co-Axial escapement for enhanced precision and longevity
Helium escape valve and screw-in crown
Adjustable stainless steel bracelet

Specifications

Brand

Omega

Family

Seamaster Planet Ocean

Model

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

Reference

232.15.42.21.01.001

Movement

8500

Movement Features

Hours, Minutes, Seconds
Date
Chronometer, Co-Axial Escapement

Case

Stainless Steel 42mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

600

Current Listings

Omega Seamaster Planet Ocean 2201.50 42mm - $2,700 - Reserved post for u/Impossible_Air725

Omega - 2201.50 · $2,700

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

Condition: Very good condition for its age, minimal marks/hairlines on case and bracelet
Movement: Omega Calibre 2500
Case material: Steel
Bracelet type: Original Omega steel bracelet

Posted at

Mar 10, 2026, 9:10 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean GoodPlanet Blue Dial 43.5mm 232.30.44.22.03.001

Omega - 232.30.44.22.03.001 · $5,100

The Omega Seamaster Planet Ocean GMT features a bold stainless steel case, rich blue dial, and matching ceramic bezel with true GMT functionality.

Condition: Excellent pre-owned condition
Case Size: 44mm
Bracelet Size: 7.5 inches
Water Resistance Depth: 600m

Posted at

Mar 10, 2026, 8:04 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean Titanium – 42mm – 2025 Complete Set

Omega - 232.90.42.21.03.001 · $5,350

This Omega Seamaster Planet Ocean features a blue ceramic bezel and dial, titanium case, and bracelet.

Condition: Mint condition
Case diameter: 42mm
Water resistance: 600m / 2000ft
Movement: Omega Calibre 8500 automatic chronometer

Posted at

Mar 10, 2026, 2:00 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 42mm, full set, excellent, $4750

Omega - 232.30.42.21.01.003 · $4,750

This Omega Seamaster Planet Ocean 600M features the Co-Axial Caliber 8500 automatic movement, ceramic bezel, and impressive 600 meters of water resistance. It has been well cared for and is in remarkable condition.

Condition: Excellent pre-owned condition
Case Size: 42mm diameter
Movement: Omega Co-Axial Caliber 8500 Automatic
Water Resistance: 2000ft / 600M

Posted at

Mar 10, 2026, 10:55 AM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2201.50

Omega - Planet Ocean 2201.50 · $4,400

A first-generation Omega Seamaster Planet Ocean in excellent condition, featuring a 42mm size and exceptional condition for its age.

Condition: Extremely good, minor marks/swirls
Movement: 2500C COSC certified
Bracelet size: fits 7.25 inch wrist with additional half-link
Service history: serviced in December 2025

Posted at

Mar 9, 2026, 10:27 PM

Active

View listing on r/WatchExchange

2021 Omega Seamaster Planet Ocean �Oreo� GMT -215.30.44.22.01.001 - BPs + Extra

Omega - 215.30.44.22.01.001 · $5,700

2021 Omega Seamaster Planet Ocean 'Oreo' GMT is a luxury watch with minor wear on the case.

Condition: Very Good Condition
Case Wear: Minor
Box Condition: Outer white box flap is loose
Accessories: Double Box,All 3 Omega Cards (Warranty dated 6/8/21),Hangtag, Manual, Customer Service papers,Extra Black/white Rubber Strap

Posted at

Apr 4, 2025, 3:36 PM

Active

View listing on RolexForums

Omega SEAMASTER PLANET OCEAN 600M STEEL SUMMER BLUE DIAL 39.5MM 2024 FULL SET

Omega - 215.30.40.20.03.002 · $5,175

This is a 2024 Omega Seamaster Planet Ocean 600m in stainless steel with a blue ceramic bezel and brushed ceramic blue gradient dial.

Condition: Excellent, unpolished condition
Movement: Co-Axial Master Chronometer calibre 8900
Water resistance: 600m
Diameter: 39.5mm

Posted at

Apr 3, 2025, 9:35 PM

Active

View listing on RolexForums

Like New Omega Seamaster Planet Ocean Orange 600 Mt. 43.5 mm 215.32.44.21.01.001

Omega - 215.32.44.21.01.001 · $4,295

The Omega Seamaster Planet Ocean is a high-end diver's watch featuring a polished black ceramic dial, orange rubber bezel, and a stainless-steel case with a 43.5 mm diameter.

Condition: Like New
Case Size: 43.5mm
Case Thickness: 16.5mm
Between Lugs: 21mm

Posted at

Mar 28, 2025, 3:04 AM

Active

View listing on RolexForums