Strap for Master Collection 38.5 Day Date Stainless Steel / Pink Gold / Black-Diamond / Bracelet

The lug width of the Longines Master Collection L2.755.5.59.7 is 20 millimetres. This measurement represents the distance between the lateral case lugs where the strap is attached. It is essential to verify this specification before purchasing an aftermarket strap, as an incorrect measurement results in incompatibility or excessive tension on the case.

The choice depends on intended use and aesthetic preference. Alligator in tortoiseshell tones amplifies the warmth of rose gold; black calf leather represents maximum versatility; shell cordovan offers superior build density and rich ageing; vegetable-tanned leather respects the watch's artisanal philosophy. For chromatic harmony, a grey silver alligator strap replicates the case's original two-tone balance.

The strap is removed using a spring bar tool to compress the micro springs securing the lateral pins. Position the tool in the access slots beneath the lugs, apply gradual pressure until the strap releases. When installing a new strap, ensure the pins seat correctly in the lugs and verify that the strap is centred relative to the case. Professional assistance from an authorised Longines service centre is recommended if you lack the appropriate tool.

Any strap with a 20 mm lug width is compatible with this model. Online at milanostraps.it, you will find a curated selection of artisanal straps in various leathers (alligator, calf, shell cordovan, FKM rubber), customisable in length, initials and stitching thread colour. The Casati Milano atelier also creates bespoke solutions with personal consultation and extended warranty.

A quality leather strap, made with vegetable or noble animal tanning, has an average lifespan of 4–8 years, depending on use and maintenance. Alligator tends to last longer than ordinary calf leather. Constant exposure to moisture, direct sunlight and perspiration accelerates ageing. The patina that develops over time is a natural part of the aesthetic; however, significant cracking or structural deterioration requires replacement. Straps crafted by Casati Milano benefit from an 18-month warranty and are readily repairable at the atelier.