Omega · Seamaster Diver 300M
Strap for Omega Seamaster Diver 300M 210.93.42.20.01.001
The Seamaster Diver 300M Master Co-Axial 42 James Bond Platinum / 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 210.93.42.20.01.001
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 210.93.42.20.01.001
What strap size does the Omega Seamaster Diver 300M 210.93.42.20.01.001 take?
The Omega Seamaster Diver 300M 210.93.42.20.01.001 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 210.93.42.20.01.001 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 210.93.42.20.01.001?
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 42 mm diver I go for a full-thickness strap, not a thin one.
Which strap do you recommend for the Omega Seamaster Diver 300M 210.93.42.20.01.001?
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.
The Seamaster Diver 300M 210.93.42.20.01.001, seen from the bench
Frequently asked questions
What is the best strap for a Seamaster Diver 300M in platinum?
For a Seamaster Diver 300M in platinum, alligator leather with traditional tanning represents the recommended choice: fine texture, develops a cognac patina over time, and pairs elegantly with the natural oxidation of platinum. Alternatively, vegetable-tanned calf offers a more pronounced grain and ages toward warm tones. For intensive marine use, structured rubber remains the only reliable option.
Is a 20mm aftermarket strap compatible with the Seamaster Diver 300M 210.93.42.20.01.001?
Yes, any strap with a 20mm lug width is compatible with this model. Always verify that the strap is designed for a 42-millimeter watch (wrist circumference and strap thickness): a thin strap (3mm) on a very muscular wrist may appear disproportionate, while a robust one (4.5-5mm) on a slender wrist creates excessive bulk.
How long does a leather strap last on a diving watch like the Seamaster Diver 300M?
Durability depends on the material and usage. Alligator leather with vegetable tanning, in daily use but without frequent immersions, resists 3-5 years before requiring replacement due to structural failure. With regular diving (snorkeling, marine work-wear), the lifespan drops to 18-24 months due to continuous humidity and drying cycles that stiffen the fibers. Structured rubber has no theoretical limit but can degrade (tears, cracks) after 5-7 years of UV and chlorine exposure. Milano Straps guarantees its straps for 18 months against manufacturing defects.
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