Strap for Divers Sixty-Five 40 Social Club Edition / Madrid

The lug width is exactly 20mm. This measurement is taken from where the horizontal pins of the case emerge on one side to the other, where the watch strap lugs will sit. Always verify this measurement before purchasing an aftermarket strap to ensure perfect compatibility.

The optimal choice depends on intended use. For daily elegance, we recommend vegetable-tanned calf leather in black or dark brown, which develops a noble patina over time. For pure aquatic functionality, a vulcanised rubber strap maintains the tool's original authenticity. Alligator leather represents the pinnacle of luxury, featuring natural grain that requires no decorative treatment.

You'll need minimal tools: a soft pry bar or spring bar tool. Position the watch face-down, locate the small metal pins threading through the lugs, insert your tool to compress them, and slide the old strap downward. Insert the new strap's pins into the same holes and release gently. The entire procedure takes less than two minutes.

Yes, any strap with a 20mm lug width is fully compatible. Milanostraps curates a refined selection of straps in this specific width—Tuscan leather, alligator, shell cordovan, NATO, and rubber. Every strap is tested for perfect fitment and aesthetic coherence with the Divers Sixty-Five's design language.

Longevity varies by material and usage intensity. A vegetable-tanned calf strap lasts 3–4 years with daily wear, developing an increasingly noble patina. Alligator leather resists degradation for 5–6 years whilst maintaining structural integrity. Leather is a living material—natural ageing is integral to its aesthetic, not a defect. Periodic conditioning with leather-specific creams will substantially extend your strap's lifespan.