Strap for Lyre 35 Quartz Yellow

The Longines Lyre L4.759.2.11.8 features an 18mm lug width. This measurement is calculated as the outer distance between the two pins of the horizontal spring (lug) that attach the strap to the case. Precision in this measurement is essential: an 18mm strap will fit perfectly into the slots, ensuring both aesthetic and mechanical stability.

Given the dress watch nature of the Lyre, the ideal strap is genuine alligator with vegetable tanning or premium calf leather in satin finish. These materials respect the minimalist aesthetic of the timepiece and develop a natural patina over time. For more casual alternatives, an interwoven cotton NATO or FKM rubber offer functional options without compromising the model's conservative identity.

The strap is removed using a dedicated tool called a spring bar tool. Gently position the tool's tip under one of the pins, compress the internal spring, and slide the pin out of the slot. Repeat on the other side. For installation, insert one pin into the case slot first, position the strap, then carefully insert the second pin with gentle leverage until you hear a click indicating secure seating.

Yes, the strap is fully removable via standard spring bars. Aftermarket straps with an 18mm lug width are completely compatible with the Lyre, provided they meet this width specification exactly. Selecting artisanal-quality straps ensures precise fit and superior longevity compared to mass-produced alternatives.

A quality leather strap—whether alligator, calf, or shell cordovan—typically lasts 5 to 10 years with regular use and proper care. Longevity depends on intensity of wear, climate conditions (humidity and heat shorten lifespan), and maintenance practices. Avoid prolonged water contact and occasionally apply watch-specific leather balms. Casati Milano straps include an 18-month warranty against construction defects.