Omega · Seamaster Diver 300M
Strap for Seamaster Diver 300M Quartz 41 Stainless Steel / Yellow Gold / White / 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 2342.20.00 (aka: 23422000)
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 2342.20.00 (aka: 23422000), seen from the bench
Frequently asked questions
What is the lug width of the Omega Seamaster Diver 300M 2342.20.00?
The lug width of this reference is exactly 20 mm. This is the distance between the two spring bars that attach the strap to the case. It is essential to measure it precisely with a caliper before ordering a new aftermarket strap.
What is the best strap for the Seamaster Diver 300M 2342.20.00?
It depends on usage and personal preferences. Dark brown alligator enhances the elegance of the steel-and-gold two-tone; shell cordovan ages magnificently, developing patina; black rubber maintains the diving vocation; vegetable-tanned leather offers everyday versatility. We recommend choosing based on your primary wearing occasion.
How do you change the strap on the Omega Seamaster Diver 300M?
Using a dedicated spring bar tool, remove the pins from the case without forcing. Next, insert the new strap by aligning the openings with the two lugs, then reinsert the pins. Caution is required to avoid damaging the case. If in doubt, it is advisable to contact an Omega service centre or an experienced watchmaker.
Are 20 mm aftermarket straps compatible with reference 2342.20.00?
Yes, any strap with a 20 mm lug width is compatible, provided the width is verified with precision. Caution: there are variants of 19 mm or 21 mm that may not fit perfectly. We recommend checking the technical specifications of the strap before purchase.
How long does a leather strap last on the Omega Seamaster?
A quality leather strap (alligator, shell cordovan or vegetable-tanned leather) typically lasts 2-4 years in daily use, depending on exposure to moisture, sweat and sunlight. Vegetable-tanned leather develops patina and can last longer; alligator maintains its appearance longer if protected from rain. Regular maintenance (gentle cleaning and treatment with natural waxes) significantly extends durability.
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

