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

Reference 2900.50.81

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

About this watch

The Omega Seamaster Planet Ocean 600M Co-Axial 2900.50.81 is a masterpiece of Swiss craftsmanship, embodying the essence of diving heritage and luxury. This watch boasts an impressive water resistance of up to 600 meters, making it perfect for professional divers and those who enjoy aquatic sports. The bold design features a black dial with mixed indexes, creating a striking contrast against the stainless steel case. The rotating bezel, marked from 0 to 60, allows divers to track their immersion time accurately. At the heart of this watch is the Omega caliber 2500 movement, a marvel of engineering that offers a power reserve of up to 48 hours and a frequency rate of 25,200 vibrations per hour. With its Co-Axial escapement, this movement reduces friction between parts and enhances precision. The Seamaster Planet Ocean is a certified chronometer, undergoing rigorous testing to ensure its accuracy. Whether you're diving into the ocean or attending a formal event, this watch adapts seamlessly to any occasion. Its simple yet effective layout makes reading the time a breeze, while the luminous hands ensure readability in low-light conditions.

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MSRP: $4,400

Market Price: $3,328

Key Features

Omega caliber 2500 movement
600 meters water resistance
Stainless steel case with rotating bezel
Sapphire glass for scratch resistance
Black dial with mixed indexes and luminous hands
45.5 mm diameter for a robust presence on the wrist
Co-Axial escapement for reduced friction and enhanced precision

Specifications

Brand

Omega

Family

Seamaster Planet Ocean

Model

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

Reference

2900.50.81

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

Omega Seamaster Planet Ocean 8900 Blue 43.5m 215.30.44.21.03.001 under warranty

Omega - 215.30.44.21.03.001 · $4,600

A used Omega Seamaster Planet Ocean 8900 Blue model, featuring a 43.5m diameter case and under warranty until October 2027.

Condition: Good
Water Resistance: 200m depth rating
Warranty Valid Until: October 2027

Posted at

Mar 7, 2026, 2:12 PM

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Omega Seamaster Planet Ocean 8500 Titanium 232.90.46.21.03.001 45.5mm

Omega - 232.90.46.21.03.001 · $4,600

This Omega Seamaster Planet Ocean is a titanium model with a 45.5mm case size.

Condition: Excellent condition
Warranty Valid Through: MAY 2028
Shipping Method: FedEx

Posted at

Mar 7, 2026, 2:08 PM

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Omega Seamaster Planet Ocean GMT Titanium 232.90.44.22.03.001 43.5mm under warranty

Omega - 232.90.44.22.03.001 · $5,200

The Omega Seamaster Planet Ocean GMT Titanium is a high-end dive watch with a 43.5mm case, featuring a GMT function and a titanium construction.

Condition: Near mint
Warranty Valid Until: 2027-10

Posted at

Mar 7, 2026, 2:05 PM

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Omega Seamaster Planet Ocean Chronograph 45.5mm 232.30.46.51.01.001

Omega - 232.30.46.51.01.001 · $4,500

A Omega Seamaster Planet Ocean Chronograph with a 45.5mm case size.

Condition: Excellent condition
Case size: 45.5mm

Posted at

Mar 7, 2026, 1:30 PM

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Omega Seamaster Planet Ocean 8500 Orange😍🍊 45.5mm 232.32.46.21.01.001

Omega - 232.32.46.21.01.001 · $4,500

This Omega Seamaster Planet Ocean 8500 is a 45.5mm watch with additional details not specified in the description.

Condition: great condition
Case size: 45.5mm diameter

Posted at

Mar 7, 2026, 1:29 PM

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Omega Seamaster Planet Ocean 8500 45.5mm 232.30.46.21.01.003 under warranty

Omega - 232.30.46.21.01.003 · $4,500

Omega Seamaster Planet Ocean 8500 with a 45.5mm case size, under warranty until November 2027.

Condition: exceptional
Warranty Valid Until: November 2027
Shipping Options: FedEx

Posted at

Mar 7, 2026, 1:25 PM

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2020 Omega Seamaster Planet Ocean Black Dial on Bracelet 215.30.44.21.01.002 B+P

Omega - 215.30.44.21.01.002 · $4,600

The Seamaster Planet Ocean is a rugged yet refined dive watch with a sharp black dial and matching black and orange ceramic bezel. It offers serious durability along with Omega’s reliable in-house movement for everyday performance.

Condition: Good condition
Case diameter: 43.5mm
Crystal material: Sapphire
Bezel material: Black and Orange Ceramic

Posted at

Mar 7, 2026, 11:37 AM

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BNIB Omega Seamaster Planet Ocean

Omega - 217.30.42.21.01.002 · $8,050

A brand new, stickered Omega Seamaster Planet Ocean with a black dial and blue bezel combination on the bracelet.

Condition: Brand new in box (BNIB)
Generation: 4th generation
Warranty Card Date: December 22, 2025

Posted at

Mar 6, 2026, 9:55 PM

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

OMEGA - 232.32.42.21.01.003 · $4,150

The OMEGA Seamaster Planet Ocean 600M Ref. 232.32.42.21.01.003 is a robust and elegant dive watch that embodies OMEGA's commitment to ocean exploration and precision engineering.

Condition: VERY GOOD - few superficial scratches on case
Case size: 42mm
Movement: Co-Axial Caliber 8500
Water resistance: 600m (2000 feet)

Posted at

Mar 6, 2026, 8:23 PM

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