Omega · Seamaster Diver 300M
Strap for Seamaster Diver 300M Automatic 41 Titanium / Black
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Recommended spring bar
Straps for the Seamaster Diver 300M 2991.50.91
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Military Alligator Green Strap€138
Hammered Calfskin Strap Light Blue€98
The Seamaster Diver 300M 2991.50.91, seen from the bench
Frequently asked questions
What is the lug width of the Omega Seamaster Diver 300M 2991.50.91?
The lug width of the Seamaster Diver 300M 2991.50.91 is 20 millimeters. This measurement is essential when choosing a compatible strap: measure the distance between the inner edges of the lugs to verify correctness before purchase.
Which strap is most suitable for the Seamaster Diver 300M in titanium?
For the Seamaster Diver 300M 2991.50.91 in titanium, we recommend brown alligator for formal elegance, shell cordovan for lasting patina, vegetable-tanned calf for everyday versatility, or FKM rubber if you frequently use the watch underwater.
How do you change the strap on the Omega Seamaster Diver 300M?
Use a dedicated tool (spring bar remover) to extract the tiny pins that hold the original strap in the lugs. Then insert the new strap by aligning the lugs with the fastening holes and snap the pin into place. Avoid using screwdrivers, which could scratch the titanium case.
Is the 20mm strap compatible with other Omega models?
The 20mm lug width is standard on many Omega Seamaster Diver models from the 300M family and on some Seamaster Planet Ocean models. Always verify the lug width of your specific case by consulting the official technical sheet before purchasing a strap.
How long does a leather strap last on the Seamaster Diver 300M?
A quality leather strap, if properly maintained (cleaning with a damp cloth, conditioning every 6 months), typically lasts 5-7 years. Durability increases if the watch is not frequently exposed to salt water: in this case, prefer rubber or NATO fabric materials for intensive underwater use.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only