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

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

Omega - 215.30.44.22.01.001 · $4,850

This Omega Seamaster Planet Ocean GMT features a 43.5mm case size and a 'Oreo' dial configuration.

Condition: very good with minor wear
Size: 43.5mm diameter
Water Resistance: 300m depth rating

Posted at

Jan 15, 2026, 12:35 PM

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Omega Seamaster Planet Ocean 600M Chrono 215.30.46.51.99.001 Grey 45mm 2025

Omega - 215.30.46.51.99.001 · $7,725

The Omega Seamaster Planet Ocean Chronograph is a modern watch that balances wrist presence and comfort, featuring a 45.5mm stainless steel case and Calibre 9900 automatic movement.

Condition: Excellent, near mint condition with faint wear on the bracelet, case, and strap
Case Size: 45.5mm diameter
Water Resistance: 600m depth rating
Movement: Calibre 9900, automatic, Master Chronometer

Posted at

Jan 14, 2026, 3:46 PM

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Omega Seamaster Planet Ocean Titanium - 42mm - Complete Set

Omega - 232.90.42.21.03.001 · $4,650

The Omega Seamaster Planet Ocean 600M is a titanium watch with a blue ceramic case, 42mm size, and a water resistance of 600 meters / 2000 feet. It comes with various accessories and is in excellent condition.

Condition: Excellent all-around condition
Case material: blue ceramic - titanium
Bracelet type: titanium bracelet
Water resistance: 600m / 2000ft

Posted at

Jan 14, 2026, 11:24 AM

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2025 Omega Seamaster Planet Ocean 18k Sedna Gold 45.5 600m GMT 215.63.46.22.01.001

Omega - 215.63.46.22.01.001 · $72,500

Water resistance depth rating: 600m
Case material: 18k Sedna Gold

Posted at

Jan 14, 2026, 9:23 AM

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Omega Seamaster Planet Ocean Ultra Deep 215.30.46.21.04.001 $7,999

Omega - 215.30.46.21.04.001 · $7,999

The Omega Seamaster Planet Ocean Ultra Deep is a technically impressive dive watch with a staggering 6,000-meter depth rating, high-performance engineering, and oversized dimensions.

Condition: Minty condition, excellent time keeping
Case Diameter: 45 mm
Lug Width: 22 mm
Lug To Lug: 51.9mm

Posted at

Jan 13, 2026, 1:50 PM

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Omega Seamaster Planet Ocean 43.5MM Blue 215.30.44.21.03.001 - Box and Ebay Authentication Card - $4000 Shipped

Omega - 215.30.44.21.03.001 · $4,000

This Omega Seamaster Planet Ocean is a 43.5mm stainless steel watch with a blue ZrO₂ ceramic dial and bezel, powered by the Caliber 8900 Co-Axial Master Chronometer movement, rated to 600m/2000ft.

Condition: Excellent overall with minor wear and hairlines
Case size: 43.5mm diameter
Water resistance: 600m/2000ft
Movement: Caliber 8900 Co-Axial Master Chronometer (60-hour power reserve)

Posted at

Jan 12, 2026, 11:03 AM

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Omega Seamaster Planet Ocean GMT 600M “Oreo” - 215.30.44.22.01.001

Omega - 215.30.44.22.01.001 · $5,650

This Omega Seamaster Planet Ocean GMT 600M 'Oreo' comes with additional accessories and is in very good condition, with some damage to the outer cardboard box.

Condition: very good pre-owned condition
Box Condition: outer box has some damage
Accessories: includes inner box, warranty, pictogram/master chrono cards, instruction booklet, AD purchase receipt

Posted at

Jan 9, 2026, 11:13 AM

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2018 OMEGA Seamaster Planet Ocean PyeongChang Limited Edition 522.32.44.21.03.001 - Full set

OMEGA - 522.32.44.21.03.001 · $5,898

A limited edition Seamaster Planet Ocean 600M created for the 2018 Olympic Winter Games, featuring a bold and sporty design with elegant luxury presence, available in two different strap options.

Condition: Very good pre-owned condition with little signs of wear, including a barely visible imperfection on the crystal just to the left of the date window.
Case material: Stainless steel
Strap options: Blue rubber strap with red accents and stainless steel bracelet
Water resistance: 600M

Posted at

Jan 8, 2026, 2:14 PM

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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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