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.

Buy Now on Jomashop

This is an affiliate link

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

Omega - 215.30.44.22.01.001 · $4,995

This Omega Seamaster Planet Ocean GMT features a 43.5mm case and is in very good condition with only light scratches on the clasp and bracelet.

Condition: Very good condition, minor wear
Size: 43.5mm diameter

Posted at

Dec 30, 2025, 1:27 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 600M 42mm Titanium Blue Dial Co-Axial Box Papers

Omega - 232.92.42.21.03.001 · $4,325

The Omega Seamaster Planet Ocean is a 42mm titanium dive watch with a blue ceramic bezel, powered by the Co-Axial Calibre 8500.

Condition: Excellent pre owned condition
Case material: Grade 2 titanium
Diameter: 42mm
Water resistance: 600m

Posted at

Dec 30, 2025, 9:14 AM

Active

View listing on r/WatchExchange

12 Days of Christmas 🎄 | Day 5/12 | Omega Seamaster Planet Ocean Titanium - 42mm 🌊

Omega - Planet Ocean · $5,500

A Omega Seamaster Planet Ocean Titanium in 42mm, this listing is part of a 12-day sale.

Posted at

Dec 29, 2025, 5:35 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2200.51 2010 Full Set $2,999

Omega - 2200.51 · $2,999

2010 Omega Seamaster Planet Ocean with box and cards, dated from 2010.

Condition: Good timegrapher numbers, last service unknown
Year: 2010
Set: Full set with box and cards

Posted at

Dec 29, 2025, 10:22 AM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2200.50 – 45.5mm Co-Axial – “Big Size” 💥 – $2,349 Shipped

Omega - 2200.50 · $2,349

This Omega Seamaster Planet Ocean is a 45.5mm Co-Axial watch that shows heavy, honest wear throughout. It has a dent on the crown side of the case and a missing bezel click spring.

Condition: Fair / well-used
Case size: 45.5mm
Bracelet size: 7.75-8.0 inches
Dial condition: clean

Posted at

Dec 28, 2025, 9:37 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 8500 Orange 45.5mm 232.32.46.21.01.003 on Omega mesh bracelet

Omega - 232.32.46.21.01.003 · $3,600

The Omega Seamaster Planet Ocean Orange features a 45.5mm case with a gray bezel, but was upgraded to an orange OEM bezel.

Condition: Near mint
Bracelet type: mesh/milanese bracelet
Original strap: black
Alternative clasp: deployant clasp

Posted at

Dec 27, 2025, 10:36 PM

Active

View listing on r/WatchExchange

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 features a 45.5mm case and is still under warranty until November 2027.

Condition: exceptional
Case Diameter: 45.5mm
Warranty Valid Until: NOV 2027

Posted at

Dec 27, 2025, 10:21 PM

Active

View listing on r/WatchExchange

Omega Seamaster Planet Ocean 2500 42.5mm 2209.50.00

Omega - 2209.50.00 · $3,400

This Omega Seamaster Planet Ocean 2500 is a 42.5mm watch with excellent condition and comes with boxes and papers.

Condition: Great condition with boxes and papers
Case Size: 42.5mm

Posted at

Dec 27, 2025, 10:16 PM

Active

View listing on r/WatchExchange

2024 Omega Seamaster Planet Ocean 600M 43.5mm Steel 215.30.44.21.01.002 Full Set

Omega - 215.30.44.21.01.002 · $4,415

This listing features a 2024 Omega Seamaster Planet Ocean 600M, a high-end diver's watch made of stainless steel with a black ceramic dial.

Condition: Nice pre-owned condition with light scratches on the case and bracelet
Case material: Stainless Steel
Case dimensions: 43.5mm
Bezel: Rotating Dive Bezel with Black Ceramic & Orange Rubber Insert

Posted at

Dec 24, 2025, 5:43 PM

Active

View listing on r/WatchExchange