Strap for Seamaster Diver 300M Automatic 36.25 Stainless Steel / Blue / Bracelet

The lug width measures 20mm. This dimension is specific to the 1990s generation of the Seamaster Diver 300M. To verify it correctly, measure the free space between the two horizontal pins of the case (not the diameter of the pins): it must be exactly 20mm. A digital caliper is the most precise tool for this verification.

It depends on your use and personal taste. Dark brown or black alligator remains the material of choice for historical and aesthetic consistency, especially with vegetable tanning for sustainability. For genuine diving use, rubber is the pragmatic choice. Vegetable-tanned calf leather offers the best compromise between leather tradition and modern versatility.

The Seamaster Diver 300M 2552.80.00 uses attachments integrated into the case. You will need to remove the horizontal pins using a specific tool (pin remover). Insert the new strap by aligning the holes with the pins, then reinsert the pins themselves. Ensure that the strap is exactly 20mm in width: errors in this measurement cause misalignment and mechanical stress.

Yes, provided it respects exactly the 20mm width and the attachment design is suitable for Omega integrated attachments. Always verify before purchase that the supplier certifies compatibility with your model. Quality artisanal straps also allow customization in leather, color, and buckle.

A quality leather strap, with vegetable tanning and silk stitching, lasts between 3 and 5 years of regular use. Duration depends on environmental humidity, frequency of contact with water, and maintenance (occasional cleaning, rapid drying after moisture exposure). Rubber offers greater longevity if exposed to saline or humid climates.