Omega · Seamaster Diver 300M
Strap for Omega Seamaster Diver 300M 212.30.36.61.01.001
The Seamaster Diver 300M Quartz 36.25 Stainless Steel / Black / Bracelet takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Seamaster Diver 300M 212.30.36.61.01.001
Selected for the 20 mm lug width · workshop selection
Blue Alligator and Rubber Hybrid Strap · rubber, for the water€138
Green Rubberized Alligator Strap with Ecru Tribal Stitching · rubber, for the water€149
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Military Alligator Green Strap★ 5 · 1€138
Hammered Calfskin Strap Light Blue€98
What I'm asked about the Omega Seamaster Diver 300M 212.30.36.61.01.001
What strap size does the Omega Seamaster Diver 300M 212.30.36.61.01.001 take?
The Omega Seamaster Diver 300M 212.30.36.61.01.001 needs 20 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.
Can the strap on the Omega Seamaster Diver 300M 212.30.36.61.01.001 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Omega Seamaster Diver 300M 212.30.36.61.01.001?
Yes, in 20 mm leather, as long as you don't wear it in the water: leather doesn't like the sea or the pool. For days in the water, rubber. On a 36 mm diver I go for a full-thickness strap, not a thin one.
Which strap do you recommend for the Omega Seamaster Diver 300M 212.30.36.61.01.001?
Rubber if you wear it in the water; otherwise a 20 mm calf strap, full thickness. You'll find it ready in the 20 mm collection. If you'd rather have something built on your wrist, the Casati atelier.
Frequently asked questions
Which leather strap is best suited for the Omega Seamaster Diver 300M?
It depends on the intended use and desired aesthetics. Alligator offers maximum elegance and a regular grain that enhances the sophistication of the steel case. Calf leather with vegetable tanning develops a natural patina over time, ideal for those who appreciate the character of aging leather. Shell cordovan in mahogany tones creates a warm and sophisticated pairing with the dark blue dial of the Seamaster Diver 300M. For daily use, vegetable-tanned calf is more resistant to weather conditions.
Are aftermarket straps truly compatible with the 212.30.36.61.01.001?
Yes, provided they are specifically sized for the 20 mm lug width. Compatibility depends on the lug width and not on the specific watch model. Any artisanal strap produced for 20 mm will fit perfectly on the lugs of the Seamaster Diver 300M 212.30.36.61.01.001 without requiring any adjustments or modifications to the case. Quality straps made by specialized ateliers guarantee millimeter precision in respecting the lug width.
How long does a leather strap last on a wristwatch like the Seamaster Diver 300M?
The lifespan depends on the quality of the leather, daily use, and exposure to weather conditions. An alligator or shell cordovan strap with vegetable tanning, if properly maintained, can last 5-7 years with intensive daily use. A vegetable-tanned calf, more resistant but less delicate, lasts 4-6 years. Prolonged exposure to salt water, sweat, and direct sunlight significantly reduces longevity. Artisanal straps with 18-month warranties such as those from Casati Milano offer protection against manufacturing defects, but periodic replacement is recommended to maintain the elegance of the Seamaster Diver 300M.
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
The atelier's website: casatimilano.com

