Omega · Seamaster Diver 300M
Strap for Seamaster Diver 300M Co-Axial 41 Stainless Steel / White / Bracelet / Vancouver Olympics
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 212.30.41.20.04.001 (aka: 21230412004001)
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 212.30.41.20.04.001 (aka: 21230412004001), seen from the bench
Frequently asked questions
What is the lug width of the Omega Seamaster Diver 300M 212.30.41.20.04.001?
The lug width is 20mm. This is the standard distance between the pins that connect the strap to the case. Measure perpendicularly with a digital caliper to verify the compatibility of a replacement strap.
Which strap is best suited for the Omega Seamaster Diver 300M?
It depends on the use: alligator (dark havana or blue-black) is ideal for formal elegance; vegetable-tanned calf offers versatility and noble aging; shell cordovan guarantees structural rigidity and magnificent patina; FKM rubber is the pragmatic choice for intensive and aquatic use.
How do I change the strap on my Seamaster Diver 300M?
You will use a spring bar tool (a tool with two flat ends): insert one end into the slot under the lug, push downward to compress the internal spring, and pull the pin out. Repeat on the other side. Always verify that the width of the new strap is 20mm before installation.
Can I use an aftermarket strap with my Omega Seamaster Diver 300M?
Yes, as long as the lug width is exactly 20mm. Milano Straps artisanal straps are specifically designed to accommodate this measurement and are 100% compatible with your model.
How long does a leather strap last on a sports watch like the Seamaster Diver?
A quality leather strap, if subjected to ordinary use (without prolonged contact with salt water), lasts between 3 and 5 years. <a href="https://milanostraps.it/pages/termine-glossario/concia-vegetale">Vegetable tanning</a> and <a href="https://milanostraps.it/pages/termine-glossario/shell-cordovan">shell cordovan</a> age by developing patina, visually extending the aesthetic life of the strap itself.
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