Omega · Seamaster Planet Ocean

Strap for Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Orange / Alligator

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference2909.50.38 (aka: 29095038)
FamilySeamaster Planet Ocean
MovementOmega caliber 2500 Hours, Minutes, Seconds | Date | Co-Axial Escapement, Chronometer
CaseStainless Steel

Recommended spring bar

Spring bars Omega 20mm — 1.8mm diameter

Technical match for lug width and diameter · lug 20 mm · Ø 1.8 mm

All Omega spring barsOpen →

Straps for the Seamaster Planet Ocean 2909.50.38 (aka: 29095038)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Seamaster Planet Ocean 2909.50.38 (aka: 29095038), seen from the bench

The Seamaster Planet Ocean represents the evolution of Omega's dive watch line launched in 2005. The 2909.50.38 reference features the automatic caliber 2500 with Co-Axial escapement and chronometer certification, offering hour, minute, second and date indication. The watch has 20mm lugs and a construction oriented towards professional underwater use.

Frequently asked questions

What is the lug width of the Seamaster Planet Ocean 2909.50.38?

The Seamaster Planet Ocean 2909.50.38 is fitted with 20mm lugs, a specific measurement of this generation produced before the adoption of the 22mm standard in later models. Verify the width by measuring the distance between the internal lugs of the case with a caliper.

What is the best strap for the Seamaster Planet Ocean 2909.50.38?

It depends on use: a black or brown alligator leather with vegetable tanning enhances formal elegance, while shell cordovan develops a rich patina over time. For authentic marine use, natural vulcanized rubber offers resistance to salt water and complete practicality.

How do you change the strap on the Omega 2909.50.38?

Position the watch face down on a soft cloth, locate the lateral spring bars that anchor the strap to the case, use a spring bar tool (precision instrument) to compress the pin and extract the old strap, then insert the new one ensuring both pins snap into place.

Is a generic 20mm strap compatible with the 2909.50.38?

Yes, any strap with a 20mm lug width is compatible, but construction quality varies significantly. Premium leathers with vegetable tanning and artisanal finishes elevate the final aesthetics of the watch, while standardized industrial straps diminish the character of this reference.

How long does a leather strap last on a watch like the Seamaster?

A high-quality leather strap (alligator, shell cordovan, vegetable-tanned calf) typically lasts 3-5 years with daily wear, developing patina and character. Longevity depends on UV exposure, humidity, and frequency of use: salt water shortens durability, while occasional wear extends it significantly.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only