Technical Archive

Longines
Lyre L4.360.1.11.7— lug 13mm

Longines Lyre L4.360.1.11.7: 13mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Lyre 25 Automatic PVD Gold / White - Roman

Artisanal Note

"This model requires a precise 13mm lug width to preserve the original sartorial balance."

Lug Width

13 mm

The essential strap measurement.

Browse 13mm straps →

Reference

L4.360.1.11.7

Movement

Longines caliber L592.2 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Longines Lyre L4.360.1.11.7 is a 25mm dress watch in stainless steel featuring the L592.2 automatic caliber with chronometer certification. The case houses a date window at 3 o'clock and maintains original proportions characteristic of 20th-century women's watchmaking. The 13mm lug width is the original construction standard for this 25mm case and must be considered for any strap replacement.

FAQ

What is the exact lug width of the Longines Lyre L4.360.1.11.7?

The lug width of the Longines Lyre L4.360.1.11.7 is precisely 13mm. This measurement is specific to the 25mm case and represents the original manufacturing standard. Measurement should be performed using a digital calliper positioned perpendicularly inside the spring bar seat. Verifying this dimension before ordering ensures mechanical compatibility and aesthetic harmony.

Which strap material is most suitable for the Longines Lyre L4.360.1.11.7?

Alligator remains the most coherent choice aesthetically and constructively, due to its regular scales and refined texture that complement the diminutive case naturally. Shell cordovan with vegetable tanning offers a sophisticated alternative, developing a unique patina over time. High-quality calf leather with lined finish permits versatile combinations, whilst rubber represents the ideal technical solution for intensive daily wear without compromising elegance.

How do you change the strap on a Longines Lyre L4.360.1.11.7?

Changing the strap on the Longines Lyre L4.360.1.11.7 requires a spring bar tool and deliberate execution, as the 25mm case features particularly minute lugs. Position the watch on a soft mat, identify the small lateral pins holding the spring bar, and compress the spring using the dedicated tool whilst sliding the strap outward. Once extracted, insert the new strap into the seat, ensuring the spring bar clicks securely. Many collectors prefer entrusting this operation to professionals to prevent lug damage.

Is an aftermarket strap compatible with the Longines Lyre L4.360.1.11.7?

Yes, any strap with 13mm lug width is mechanically compatible with the Longines Lyre L4.360.1.11.7, though it is essential to verify that it is specifically dimensioned for this case. Aftermarket straps not explicitly calibrated may prove excessively long or present disharmonious proportions. Milano Straps offers a dedicated collection for 13mm widths, with straps tested for compatibility and aesthetic proportion with this 25mm case. Casati Milano's 18-month warranty covers the strap for potential future adjustments.

How long does a natural leather strap last on the Longines Lyre L4.360.1.11.7?

The durability of a natural leather strap depends upon material and usage patterns. Alligator and shell cordovan, if subjected to ordinary maintenance (periodic cleaning, protection from excessive moisture), retain structural integrity for 5-8 years. High-quality calf achieves 3-5 years of daily wear. Factors such as frequency of use, water and humidity exposure, and personal care significantly impact longevity. Milano Straps warrants its straps for 18 months; replacement of spring bars or minor repairs are executed without charge during this period.