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

The exact lug width of the Seamaster Diver 300M 2561.80.00 is 20mm. This width is standard for the reference and ensures precise attachment with any compatible 20mm strap. Measure the distance between the spring bar pins at the ends of the case to verify the compatibility of an aftermarket strap.

The choice depends on use: for formal elegance, genuine alligator with pronounced cross grain; for daily versatility, vegetable-tanned calf that develops patina over time; for maximum water practicality, shell cordovan or structured FKM rubber. We recommend navy blue alligator or tobacco brown calf to emphasize the ocean blue dial.

Obtain a dedicated spring bar tool. Insert the tip into the spring bar groove at the base of the lug, compress it inward until the pin is freed from the case, then remove the old strap. Repeat the reverse procedure with the new strap. If you are unsure, contact a certified watchmaker or the Casati Milano atelier for service.

Yes, provided the lug width is exactly 20mm. A custom strap from milanostraps.it specific to this width fits perfectly into the Omega case lugs. Verify that the leather thickness is not excessive, to avoid tension on the spring bar. Casati Milano custom straps are specifically designed for your model.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) lasts 3 to 6 years of moderate wear, developing patina and character. Frequent exposure to water, sweat and sunlight accelerates aging. Casati Milano straps include an 18-month warranty and allow maintenance interventions at no additional cost within the first two years.