Strap for Seamaster Diver 300M Co-Axial 41 Stainless Steel / Black / Bracelet / Ceramic

The lug width is 20mm. This measurement represents the internal distance between the case lugs. To measure correctly, use a digital caliper positioned perpendicularly between the two lugs, without including the outer edges of the lugs as this could alter the result.

It depends on your use. For frequent diving, a technical fabric NATO strap dries quickly and resists salt water. For primarily daily wear, black or navy blue alligator with matte finish combines aesthetic luxury with practicality. Vegetable-tanned calf leather is ideal if you seek a patina that evolves over time.

The Seamaster Diver 300M uses a standard spring bar system. Obtain a spring bar tool made of steel or a specific removal tool. Insert the tool from the outside of the case, gently push the spring toward the inside and the pin slides out. Consult an experienced watchmaker if you are unfamiliar with the operation.

Yes. Your Seamaster Diver 300M with 20mm lug width is compatible with any quality strap built to this standard width. On milanostraps.it you will find a selection of 20mm straps in leather, NATO and rubber, customizable according to your preferences.

Durability depends on the material and usage. Vegetable-tanned alligator lasts an average of 3-5 years with occasional diving, but can degrade more quickly if frequently exposed to salt water without rapid drying. Calf leather has similar durability. For intense marine use, we recommend technical fabric NATO or vulcanized rubber straps, which easily exceed 7-10 years of use.