Strap for Divers Sixty-Five 40 Chronograph Stainless Steel / Black

The lug width is 21 millimetres. This dimension is specific to this reference and does not align with more common international standards such as 20mm. Always verify the technical specifications of the strap before purchase to ensure precise fitting with the spring bars.

The choice depends on intended use: for actual diving, we recommend FKM vulcanised rubber or Cordura NATO straps, which guarantee moisture resistance and rapid drying. For urban everyday wear, alligator with vegetable tanning or perforated calf leather creates aesthetic balance with the steel case. A compatible steel deployante clasp allows adjustment over a wet suit.

Use a dedicated springbar tool. Position the watch on a soft surface, gently lift the spring mechanism to release the pin from one side, then remove the old strap. Insert the new spring bar into the first lug, then lower and insert the pin into the second lug. Verify that the spring clicks into position. Never force the case lugs.

Yes. At milanostraps.it you will find artisanal leather, NATO and rubber straps specifically calibrated for 21mm lug width. All our straps are tested for mechanical compatibility with spring bars. You can customise finishes, colours and attachment directly in the online catalogue.

A quality vegetable-tanned leather strap, if subjected to moderate use (not frequent immersion in salt water), maintains structural integrity for 4–6 years. Continuous exposure to marine humidity reduces this lifespan to 2–3 years. We recommend alternating with rubber or NATO straps during summer holidays, and applying hydrophobic protection seasonally.