Strap for Master Collection Date 36 Two Tone

The lug width of the Longines Master Collection L2.518.5.78.7 is 19 millimetres. This measurement is the standard reference for selecting a compatible strap. To verify correctly, measure the distance between the inside of one lug and the other at the widest point of the case. A 19mm strap will fit perfectly without oscillation or gaps.

For the Longines Master Collection L2.518.5.78.7, straps crafted from alligator or calf leather represent the most sophisticated choices. Alligator with its regular texture enhances the dress watch character through its visual geometry and develops a graceful patina over time. Calf leather offers superior chromatic versatility, suitable for both dark tones (black, brown) and contemporary colours. For more dynamic contexts, vulcanised rubber or Cordura maintain elegance whilst offering practicality.

Changing the strap on a Longines Master Collection involves removing the lugs (the pins that connect the strap to the case). Use a dedicated tool called a spring bar tool to compress the internal pin and free it from the seats. Remove the old strap and insert the new 19mm strap, ensuring that the pins lock correctly in both lugs. If you are not confident with the procedure, a watchmaker or the Casati Milano atelier can complete it for you in minutes.

Yes, any artisanal strap made for a 19mm lug width is completely compatible with the Longines Master Collection L2.518.5.78.7. Straps purchased from milanostraps.it are available in multiple materials (alligator, calf, shell cordovan, rubber) and offer customisations such as initials, custom lengths, and stitching thread selection. Each strap maintains the quality standards required for a watch of this calibre.

The lifespan of a leather strap depends on the material and usage. High-quality alligator and calf leather with traditional tanning guarantee 5–7 years of daily wear if subjected to ordinary maintenance. Shell cordovan, thanks to its density and structure, can last beyond 10 years. Ageing is not a defect but a virtue: the patina that forms tells the story of elapsed time. Casati Milano straps include an 18-month warranty and can be revitalised through professional restoration.