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 600M 215.30.44.21.01.002 43.5mm Box Papers 2022

Omega - 215.30.44.21.01.002 · $4,975

The Omega Seamaster Planet Ocean 600M features a 43.5mm stainless steel case, black ceramic dial with orange Arabic numerals, and date display.

Condition: Excellent condition with light wear on the case and bracelet
Case size: 43.5mm diameter
Water resistance: 600m
Movement type: Co-Axial Master Chronometer, automatic

Posted at

Mar 1, 2026, 1:32 PM

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Omega Seamaster Planet Ocean 2200.50 - 45.5mm - Price Reduced!

Omega - 2200.50 · $2,595

This Omega Planet Ocean 2200.50 is a fantastic piece and a great example compared to other similar watches online. It has very minimal wear on the bracelet, case, and clasp. The watch is running fantastically.

Condition: Great, minimal wear
Case size: 45.5mm diameter
Wrist size range: up to 7.5 inches

Posted at

Feb 28, 2026, 2:20 PM

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Omega Seamaster Planet Ocean Good Planet Foundation Ref: 232.32.44.22.03.001 | Full Set

Omega - 232.32.44.22.03.001 · $4,500

A vibrant blue Omega Seamaster Planet Ocean 600M "Good Planet" watch with a 43.5mm stainless steel case, polished blue ceramic bezel, and distinctive orange GMT accents.

Case diameter: 43.5 mm
Thickness: 17.25 mm
Lug width: 21 mm

Posted at

Feb 28, 2026, 1:59 PM

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Omega Seamaster Planet Ocean “Creamsicle” Nato Strap Full Box & Papers Complete Set - 2019

Omega - 215.32.44.21.04.001 · $6,790

2019 Omega Seamaster Planet Ocean 600M "Creamsicle" is a full box and papers complete set.

Condition: very good
Included Items: outer & inner box, all 3 cards, booklet
Payment Methods: Wire/Zelle

Posted at

Feb 28, 2026, 11:57 AM

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OMEGA Seamaster Planet Ocean 6000M Ultra Deep "Summer Blue" Ref. 215.30.46.21.03.002 - ULTIMATE SET! 🔥$12,000🔥

OMEGA - 215.30.46.21.03.002 · $12,000

This OMEGA Seamaster Planet Ocean 6000M Ultra Deep Ref. 215.30.46.21.03.002 represents the pinnacle of deep-sea engineering, originally developed for the Five Deeps Expedition and featuring a water-resistant case to an astounding 6,000 meters (20,000 feet). The massive 45.5mm case is crafted from O-MEGASTEEL, a high-grade stainless steel that offers superior strength, whiteness, and corrosion resistance.

Condition: UNWORN
Case material: O-MEGASTEEL
Diameter: 45.5mm
Water resistance: 6,000m (20,000ft)

Posted at

Feb 26, 2026, 9:18 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 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
Movement: Co-Axial Caliber 8500
Case material: stainless steel
Case diameter: 42mm

Posted at

Feb 26, 2026, 9:17 PM

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Omega Seamaster Planet Ocean “Creamsicle” Nato Strap Full Box & Papers Complete Set

Omega - 215.32.44.21.04.001 · $6,990

A 2021 Omega Seamaster Planet Ocean 600M with full box and papers is being sold.

Condition: very good
Box set: Full Box & Papers Complete Set
Strap type: Nato Strap

Posted at

Feb 26, 2026, 8:17 PM

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Omega Seamaster Planet Ocean 600M 39.5MM Black Dial 215.30.40.20.01.001 with Box

Omega - 215.30.40.20.01.001 · $3,630

This Omega Seamaster Planet Ocean 600M features a stainless steel case, black ceramic bezel, and automatic mechanical movement.

Condition: Preowned with some scratches on the case, bracelet, and crystal
Case material: stainless steel
Case dimensions: 39.5mm diameter
Bezel material: stainless steel

Posted at

Feb 26, 2026, 7:54 PM

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Omega Seamaster Planet Ocean - 2209.50 - 42mm - Price Reduced!

Omega - 2209.50 · $2,650

The Omega Seamaster Planet Ocean ref: 2209.50 is a purpose-built diver with a 42mm case size and orange bezel, described as one of the best-looking watches owned.

Condition: Pre-owned, worn throughout giving a vintage aesthetic
Case Size: 42mm
Bezel Color: orange

Posted at

Feb 26, 2026, 3:15 PM

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