Strap for Seamaster Diver 300M Automatic 41 Stainless Steel / Electric Blue / Bracelet

The lug width is exactly 20mm. This measurement corresponds to the distance between the two upper lugs of the stainless steel case. To verify, manually measure the inside of the lugs: it should be 20mm. On milanostraps.it all 20mm straps are certified compatible with this reference.

It depends on usage: to maintain the historic character of reference 2255.80.00, we recommend brown alligator with vegetable tanning or satin English calf; for actual diving, FKM rubber or silicone guarantee waterproof performance; for everyday versatility, a cotton-polyester NATO or leather with steel deployant offer practicality and style.

Obtain a spring bar tool and position the watch on a soft surface. Locate the two elastic horizontal pins that connect the strap to the lugs. Press the pin toward the center with the tool to compress the internal spring, then remove the pin. Repeat for the second pin, release the old strap and insert the new one in the same way, ensuring the pins click firmly into position.

Yes, any strap with a 20mm lug width is compatible. Verify that the strap is labeled for 20mm width (not 19mm or 21mm). The straps in the milanostraps.it collection are filtered by lug width and cataloged for compatibility with the Seamaster Diver 300M.

A quality leather strap (alligator, calf with vegetable tanning) lasts 3-5 years with normal use and proper maintenance. Frequent exposure to saltwater (regular diving) reduces durability; in this case, a rubber strap is recommended. Artisanal straps from Casati Milano include an 18-month warranty and can be regenerated through aging leather reconditioning.