Strap for Seamaster Diver 300M Quartz 41 Stainless Steel / Black / Rubber

The Omega Seamaster Diver 300M reference 2964.50.91 has a lug width of 20mm. This measurement is determined by calculating the distance between the two metal pins that connect the strap to the case. It is the specific standard of this generation of Seamaster and is proportioned to the 41mm diameter of the case.

It depends on your use and personal preferences. For an elegant context, alligator or vegetable tanning are ideal, as they enhance Swiss sophistication. For those who emphasize professional vocation, grained calf with pronounced texture or NATO straps convey instrumentality. Butyl rubber remains the most robust choice for humid environments. The ideal color ranges from navy blue (consistency with the marine theme) to cognac brown (warm contrast) to black (complete sobriety).

The strap is changed by extracting the metal pins (lug bars) that connect it to the case. Position the watch on a soft surface, identify the small hole on the side of the pin and use a specific tool (spring bar tool) to compress the internal spring, sliding the pin outward. Once the lug is free, repeat the operation on the other end. Insert the new strap by aligning the pins to the case axes and press until you hear an audible safety click.

Yes, all straps with a 20mm lug width are compatible with the Seamaster Diver 300M 2964.50.91. Online you will find straps ready for shipment, customizable in length, initials and stitching thread color. For a bespoke experience, the Casati Milano atelier creates custom straps with personal leather selection, WhatsApp monitoring and 18-month warranty.

The lifespan of a leather strap depends on the quality of the tanning, the material (alligator, calf, shell cordovan), usage and maintenance. A handcrafted strap in superior quality leather can last 3-5 years of regular use if properly cared for. Leather tends to develop a natural patina over time, especially with vegetable tanning, which represents positive aging. Exposing the strap to direct heat sources, prolonged moisture or excessive friction reduces longevity. To maximize durability, we recommend rotating multiple straps and allowing them time to dry completely after contact with moisture.