Omega Seamaster Planet Ocean Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 18 Sapphires

Reference 2904.50.38

Omega Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 18 Sapphires

About this watch

The Omega Seamaster Planet Ocean 2904.50.38 is a stunning luxury watch that combines technical prowess with elegant design. Its round case with a diameter of 45.5 mm boasts a bold and eye-catching presence on the wrist. The blue dial, complemented by a gem-set bezel, creates an elegant contrast that is both sophisticated and sporty. Crafted from white gold and stainless steel, this watch exudes luxury and durability. The sapphire crystal glass is scratch-resistant, ensuring your watch remains pristine even after years of wear. At the heart of this timepiece is the Omega Caliber 2500, a reliable and accurate co-axial movement that promises to keep ticking accurately. With a frequency of 25,200 vibrations per hour and a power reserve of 48 hours, it's a marvel of engineering. The watch features an impressive water resistance of up to 600 meters, making it perfect for diving enthusiasts and water sports lovers. Its analog display is straightforward, making it easy to read the time at a glance. Additionally, the date function is a handy feature for those who like to keep track of the calendar without pulling out their phones.

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Key Features

Omega Caliber 2500 Co-Axial Movement
Water Resistance up to 600 meters
Sapphire Crystal Glass
Blue Mother of Pearl Dial

Specifications

Brand

Omega

Family

Seamaster Planet Ocean

Model

Seamaster Planet Ocean 600M Co-Axial 45.5 Mécanique 18 Sapphires

Reference

2904.50.38

Movement

2500

Movement Features

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

Case

45.5mm

Dial Color

Blue

Crystal

Sapphire

Water Resistance

600

Current Listings

Omega Seamaster Planet Ocean 45mm 232.30.46.21.01.001 - $2999

Omega - 232.30.46.21.01.001 · $2,999

This Omega Seamaster Planet Ocean is listed for sale with its original box and papers.

Condition: The bezel and crystal are clean and clear, but the Case has some faint hairline scratches and one very small knick on the lug, with signs of wear on the bracelet.
Box And Papers: Yes
Shipping: via FedEx Ground with signature confirmation

Posted at

Jan 7, 2026, 1:34 PM

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2021 Omega Seamaster Planet Ocean 600M Full Set in excellent condition Reference 215.30.44.21.03.001

Omega - 215.30.44.21.03.001 · $4,199

This 2021 Omega Seamaster Planet Ocean 600M is a full set timepiece with various accessories, including a white outer box and inner wooden presentation box.

Condition: Very good preowned condition
Case size: 44mm diameter
Depth rating: 600m

Posted at

Jan 7, 2026, 11:23 AM

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Omega Seamaster Planet Ocean 600M Blue Ceramic 43.5mm - Complete

Omega - 21530442103001 · $4,500

The Omega Seamaster Planet Ocean 600M Blue Ceramic features a stainless steel case, blue ceramic dial, and unidirectional bezel with Liquidmetal diving scale. It has an automatic chronometer movement and is water resistant to 600 meters.

Condition: Unworn/mint condition
Case Size: 43.5mm
Movement Type: Automatic chronometer

Posted at

Jan 6, 2026, 2:31 PM

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Omega Seamaster Planet Ocean GMT “Oreo” - 215.30.44.22.01.001 - Price Reduced!

Omega - 215.30.44.22.01.001 · $4,895

This Omega Seamaster Planet Ocean GMT is a 43.5mm watch that features a 'very good' condition, with some light scratches on the clasp and bracelet.

Condition: Very good condition with minor wear
Size: 43.5mm diameter
Water Resistance: 600m depth rating
Movement Accuracy: +-0 seconds lost per day

Posted at

Jan 6, 2026, 2:04 PM

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Omega Seamaster Planet Ocean 2500 1st gen 42.5mm 2209.50.00

Omega - 2209.50.00 · $3,400

This is a first-generation Omega Seamaster Planet Ocean, model 2500, with a 42.5mm case size.

Condition: great condition
Case Size: 42.5mm

Posted at

Jan 4, 2026, 3:05 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

This Omega Seamaster Planet Ocean 8500 is a high-end dive watch with exceptional condition and still under warranty.

Condition: exceptional condition
Warranty Valid Until: NOV 2027

Posted at

Jan 4, 2026, 3:03 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

The Omega Seamaster Planet Ocean 8500 is a 45.5mm watch with additional details.

Condition: great condition
Case size: 45.5mm diameter

Posted at

Jan 4, 2026, 2:58 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

This Omega Seamaster Planet Ocean Chronograph is a 45.5mm watch with various features and settings.

Condition: Excellent condition
Case Size: 45.5mm
Shipping: FedEx to the US
Payment Methods: Zelle, Venmo, Wire, Apple Pay

Posted at

Jan 4, 2026, 2:54 PM

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[WTT] Omega Seamaster Planet Ocean 600M - Skyfall Limited Edition - w/ Omega Service Price Drop

Omega - 232.30.42.21.01.004 · $4,800

A Skyfall Limited Edition Omega Seamaster Planet Ocean 600M watch, one of only 5,007 pieces produced, featuring a black patterned dial, Omega's in-house caliber 8507b movement with silicon balance spring for increased anti-magnetic properties, and 42mm case size.

Condition: Pre-owned, serviced by Omega in August
Movement: Omega's in-house caliber 8507b
Water Resistance: 600m (~2000ft)
Size: 42mm diameter

Posted at

Jan 4, 2026, 1:20 PM

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