Omega · Seamaster Diver 300M
Strap for Seamaster Diver 300M Quartz 28 Stainless Steel / Yellow Gold / Blue / 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 2482.80.00 (aka: 24828000)
Selected for the 20 mm lug width · workshop selection
Military Red Alligator Strap with Blue Stitching€183
Black and Red NATO Strap — Military Heritage€183
Black Crocodile Military Strap with Blue Stitching€183
Black Calfskin NATO Strap 20mm€80
Dark Brown Calfskin Military Strap€80
The Seamaster Diver 300M 2482.80.00 (aka: 24828000), seen from the bench
Frequently asked questions
What is the lug width of the Omega Seamaster Diver 300M 2482.80.00?
The lug width of the Seamaster Diver 300M 2482.80.00 is exactly 20mm. This width is determined by the geometry of the case lugs and must be measured between the internal attachments. To verify it, use a digital caliper positioned perpendicular to the case, measuring the internal space between the two lugs at the widest point.
Which strap material pairs best with the two-tone yellow gold and steel 2482.80.00?
A dark brown alligator or vegetable-tanned calf leather create the most refined balance. The alligator enhances the two-tone nobility without competing for attention, while the calf develops a natural patina that acquires golden reflections over time, echoing the gold of the case.
How do you correctly measure the lug width to avoid getting the wrong strap?
The lug width is not the total length of the lug, but the transverse distance between the attachments. Position a digital caliper perpendicular to the case and measure the internal space between the two attachments at the widest point. Even a half-millimeter error would result in unwanted play or impossibility of installation.
Is a 20mm aftermarket strap compatible with the Seamaster Diver 300M 2482.80.00?
Yes, any strap with a lug width certified at 20mm is mechanically compatible. However, it is essential to choose materials and construction suitable for diving functionality and the two-tone character of the model: alligator, shell cordovan, vegetable-tanned calf, or vulcanized rubber maintain aesthetic and functional integrity.
How long does a leather strap last on an Omega Seamaster Diver 300M?
A high-quality alligator or shell cordovan strap lasts 3-5 years with daily use and routine maintenance. Longevity depends on sun exposure, environmental humidity, and cleaning frequency. The standard warranty is 18 months, but material aging continues positively beyond that, with development of patina and natural color variations.
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

