Strap for Lyre 30 Automatic PVD Gold / White - Roman / Bracelet

The lug width of the Longines Lyre L4.361.2.11.7 is 15 millimetres. This measurement is taken by positioning a digital calliper perpendicular to the case, between the two pins where the strap connects. Measurement precision is critical: a tolerance of ±0.5mm is the maximum acceptable to ensure a proper fit without play or excessive tension.

The Lyre L4.361.2.11.7 expresses its aesthetic potential with straps in alligator or lightweight calf leather (thickness 1.2-1.5mm). Black or dark blue alligator amplifies the authority of the stainless steel case; vegetable-tanned calf introduces patina and personal character over time. For versatile daily wear, shell cordovan or cotton NATO straps are equally valid choices, provided visual proportion remains refined and proportionate.

The strap is changed by removing the spring bars using a specialised extraction tool. Position the watch with the case facing upward, insert the flat end of the tool into the lateral hole of the spring bar, apply gentle pressure, and simultaneously withdraw the bar from its seat. Once the bar is removed, the strap disengages. Installation of the new strap follows the reverse process, ensuring the spring bar is fully seated and secure.

Yes. Any strap with a 15mm lug width is mechanically compatible. Selecting a high-quality aftermarket strap ensures that aesthetic proportion is preserved and durability is certified. Specialist brands offer options in leather, rubber, and textile that respect Longines' standards for constructive tolerance and material specification.

The lifespan of a leather strap depends on usage intensity, environment (humidity, temperature, UV exposure), and tanning quality. A high-quality alligator or shell cordovan strap, with moderate daily wear, lasts 4–6 years before replacement is required. Vegetable-tanned calf tends to wear more rapidly (2–4 years) but develops a patina that many collectors consider desirable. Regular maintenance (swift drying if wet, avoiding full immersion) significantly extends useful life.