Technical Archive

Longines
Elegant L4.309.4.97.6— lug 13mm

Longines Elegant L4.309.4.97.6: 13mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Elegant Collection 25.5 Automatic Stainless Steel / Blue - Diamond / Bracelet

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

L4.309.4.97.6

Movement

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

The Heritage

The Longines Elegant L4.309.4.97.6 features a 25.5mm stainless steel case with a certified chronometer L592.2 automatic movement. The watch includes hours, minutes, seconds, and date functions with 30 meters water resistance. Characterized by a 13mm lug width, this model exemplifies the Elegant collection's Art Déco heritage through minimalist design and precise proportions.

FAQ

What is the lug width of the Longines Elegant L4.309.4.97.6?

The lug width of the Longines Elegant L4.309.4.97.6 is 13mm. This is a non-standard measurement, characteristic of this ladies' model. The measurement is taken as the distance between the inner shoulders of the case, where the strap attaches to the lugs.

Which strap is best suited for the Longines Elegant L4.309.4.97.6?

For the L4.309.4.97.6, straps in alligator, vegetable-tanned calf or shell cordovan are recommended, all in 13mm width. Vegetable-tanned alligator provides elegant texture; shell cordovan develops sophisticated patina over time. Avoid heavy materials that would distort the delicate proportions of the case.

How do you change the strap on a Longines Elegant L4.309.4.97.6?

The strap is replaced using a spring bar tool to gently remove the attachment pins from the 13mm lugs. Insert the new strap, aligning it perfectly with the case shoulders. If inexperienced, consult a watchmaker to avoid scratching the case.

Is there an aftermarket strap compatible with the Longines Elegant L4.309.4.97.6?

Yes. milanostraps.it offers handcrafted 13mm straps with customisable finishes (stitching, initials, length) specifically compatible with the L4.309.4.97.6. Casati Milano atelier also creates bespoke straps with colour consultation and 18-month warranty.

How long does a leather strap last on a Longines Elegant L4.309.4.97.6?

A quality leather strap (alligator, calf, shell cordovan) on a daily-worn watch typically lasts 3-5 years before replacement. Longevity depends on moisture exposure, sunlight and tanning quality. Vegetable-tanned leather develops patina that increases aesthetic value, while chrome-tanned wears faster but uniformly.