Strap for Seamaster Planet Ocean 600M Co-Axial 37.5 Chronograph Stainless Steel / Diamond / Black / Alligator

The lug width is 20mm. This is the space between the case attachment pins where the strap is fixed. To verify compatibility, measure the distance between the pins located at 12 and 6 o'clock: it must be exactly 20mm.

It depends on use and aesthetic preferences. For maximum elegance we recommend vegetable-tanned alligator, which develops a patina over time. For durability and versatility, shell cordovan is superior. For sports and diving use, a technical rubber strap maintains functionality and coherent aesthetics.

Use a dedicated spring bar tool to gently lever the lateral attachment pins. Do not apply excessive force to avoid scratching the case. Once the pins are removed, the old strap will slide off easily. Insert the new strap by aligning the holes and reinsert the pins until the locking click.

Yes, any strap with a 20mm lug width is compatible. However, it is essential to verify that the width matches exactly and that the strap has no sharp edges that could scratch the case. Milano Straps artisanal straps are made with precise tolerances to guarantee optimal fit.

A quality leather strap with vegetable tanning lasts an average of 3-5 years with daily use, developing an appreciated aging patina in the meantime. Shell cordovan resists for 7-10 years thanks to the superior density of the leather. Durability depends on exposure to moisture, sweat and maintenance: avoid prolonged immersions if not necessary and let the strap air dry.