Strap for Master Collection 29 MOP / Bracelet

The lug width of the Longines Master Collection L2.257.4.87.6 is 15mm. This measurement is critical for strap compatibility: always ensure you order straps with this specific lug width to guarantee precise fit and security.

The ideal strap depends on your use case: for formal occasions, we recommend alligator in black or dark brown with vegetable tanning; for daily wear, a brown calf with natural patina or shell cordovan; for contemporary versatility, a grey-pearl calf or deep blue alligator. All straps must have a compatible 15mm lug width.

To change the strap, use a spring bar tool to gently compress the lugs (spring bars) at the case ends. Once compressed, the lugs retract and the strap can be removed. Insert the new strap by aligning the holes to the case ends and release the lugs until they click into place. Verify the strap is secure before wearing the watch.

Yes, provided the strap has exactly 15mm lug width. Always verify this measurement before purchase. Milano Straps offers multiple material and colour options – all available in 15mm width – plus customisation options including length, initials, and stitching thread selection.

A leather strap's lifespan depends on usage, material, and maintenance conditions. Under normal wear, a calf or alligator strap typically lasts 18-36 months before replacement is needed. Shell cordovan, thanks to vegetable tanning and denser fibre structure, can last 3-4 years or more. The natural patina that develops over time is a sign of authenticity and gradual ageing, not degradation. Milano Straps guarantees 18 months on all bespoke straps.