Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator

Reference 2900.50.37

Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator

About this watch

The Omega Seamaster Planet Ocean 2900.50.37 is a luxury watch that embodies style, functionality, and adventure. Founded in 1848, Omega has established itself as a titan in the watch industry, known for precision, quality, and innovative technology. This timepiece features the Omega Caliber 2500 movement, a co-axial version of the ETA 2892-A2 designed to enhance accuracy and reduce friction. The black dial, adorned with luminous markers and hands, ensures readability in any environment. The watch's robust stainless steel case is comfortable on the wrist, while the sapphire crystal protects the dial from scratches and impacts. With a water resistance of 600 meters, it's built for serious divers but doesn't shy away from elegance. The Seamaster Planet Ocean 2900.50.37 is a true embodiment of the brand's dedication to excellence, blending ruggedness and elegance in its design.

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MSRP: $4,200

Market Price: $3,536

Key Features

Omega Caliber 2500 movement
600m water resistance
Sapphire crystal glass
45.5mm stainless steel case
Rotating bezel with 0-60 markings
Black dial with luminous markers and hands
48-hour power reserve

Specifications

Brand

Omega

Family

Seamaster Planet Ocean

Model

Seamaster Planet Ocean 600M Co-Axial 45.5 Stainless Steel / Black / Alligator

Reference

2900.50.37

Movement

2500

Movement Features

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

Case

Stainless Steel 45.5mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

600

Current Listings

NOS Omega Seamaster Planet Ocean 600 “Creamsicle” 43.5mm 2023 complete set LNIB

Omega - 215.30.44.21.04.001 · $5,749

The Omega Seamaster Planet Ocean 600M is a true professional dive watch, combining rugged capability with refined Swiss engineering. It features a 43.5mm stainless steel case paired with a striking orange ceramic bezel and offers serious underwater performance while maintaining a bold, modern aesthetic.

Condition: Like New
Case Size: 43.5mm diameter
Water Resistance: 600m depth rating
Movement: Omega Caliber 8900 (Automatic, Co-Axial Master Chronometer)

Posted at

Apr 24, 2026, 12:23 PM

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Omega Seamaster Planet Ocean 600m “Sochi 2014” Limited Edition - No. 1629/2014 - Ref. 522.30.46.21.01.001 - Complete Set

Omega - 522.30.46.21.01.001 · $4,500

This Omega Seamaster Planet Ocean 600M 'Sochi 2014' Limited Edition is a unique commemorative piece produced in a run of just 2,014 pieces worldwide. It features a case diameter of 45.5mm and a stainless steel case material. The watch has a black dial and a domed scratch-resistant sapphire crystal with anti-reflective treatment on both sides.

Condition: Good condition with signs of wear present, consistent with a used watch
Case diameter: 45.5mm
Lug-to-lug: 51.5mm
Thickness: 16.6mm

Posted at

Apr 23, 2026, 4:12 PM

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2020 Omega Seamaster Planet Ocean 600M 42mm Black 232.30.42.21.01.001 Full Set - $4,395

Omega - 232.30.42.21.01.001 · $4,395

Up for sale is a Omega Seamaster Planet Ocean 600m 42mm Black, thoroughly tested on a timegrapher and running well.

Condition: Excellent condition with minimal signs of wear
Year: 2020

Posted at

Apr 23, 2026, 3:08 PM

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2025 Omega Seamaster Planet Ocean 600m Titanium Blue 232.92.44.22.03.001 Full Set - $4,995

Omega - 232.92.44.22.03.001 · $4,995

A Omega Seamaster Planet Ocean 600m Titanium Blue watch in excellent condition is being sold for $4,995. The watch features a titanium blue case and has been thoroughly tested on a timegrapher.

Condition: Excellent condition with minimal signs of wear
Case material: Titanium
Depth rating: 600m

Posted at

Apr 23, 2026, 3:02 PM

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[US] Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - 232.30.46.21.01.001 - Full Set

Omega - 232.30.46.21.01.001 · $4,475

Up for sale is an Omega Seamaster Planet Ocean 600m - Black Dial - 45.5mm - Full Set Watch functions perfectly mechanically, without issue.

Condition: Fantastic, minor hairlines on case, clasp, or bracelet
Case size: 45.5mm diameter
Water resistance: 600m
Depth rating: 600m

Posted at

Apr 23, 2026, 8:34 AM

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Omega Seamaster Planet Ocean 600M 43.5mm (Ref. 215.30.44.21.01.002) - Full Kit

Omega - 215.30.44.21.01.002 · $2,700

A Omega Planet Ocean 600M with a 43.5mm case, orange accents on the bezel and incredible karma for its owner.

Condition: Excellent
Bracelet material: Steel
Comes with: all boxes and cards

Posted at

Apr 22, 2026, 2:27 PM

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🏒🥅🚨 2026 Omega Seamaster Planet Ocean 600M Co-Axial Master Chronometer — Unworn, White Dial, Orange Bezel — Full Set — Ref. 215.30.44.21.04.001

Omega - 215.30.44.21.04.001 · $6,950

The 2026 Omega Seamaster Planet Ocean 600M pairs a crisp white dial with a vibrant orange bezel for a bold, modern dive watch aesthetic that still feels classically Omega.

Condition: Unworn
Case Size: 43.5 mm
Water Resistance: 600 m
Movement: Master Chronometer

Posted at

Apr 21, 2026, 10:38 PM

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OMEGA Seamaster Planet Ocean 600m 215.32.44.21.01.001 43.5mm

Omega - 215.32.44.21.01.001 · $5,000

This Omega Seamaster Planet Ocean 600M features a 43.5mm case size with a sapphire crystal and an Omega Co-Axial Master Chronometer (Cal. 8900) movement.

Condition: Good, unpolished
Case size: 43.5mm diameter
Movement: Omega Co-Axial Master Chronometer (Cal. 8900)
Crystal: Sapphire

Posted at

Apr 21, 2026, 2:39 PM

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