Longines · Elegant
Strap for Elegant Collection 25.5 Automatic Stainless Steel / Red Gold / MOP
Takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Elegant L4.309.5.87.7 (aka: L43095877), seen from the bench
Frequently asked questions
What is the lug width of the Longines Elegant L4.309.5.87.7?
The lug width of the Longines Elegant L4.309.5.87.7 is 13mm. This measurement refers to the internal distance between the two spring bar attachments on the case. It is an exceptionally rare specification in modern watches, so compatibility with aftermarket straps requires rigorous selection. Always measure directly between the attachments before ordering a personalised strap.
Which strap is best suited for the Longines Elegant L4.309.5.87.7?
For the Longines Elegant L4.309.5.87.7 we recommend genuine alligator for supreme elegance, or vegetable-tanned calf for daily durability and natural patina over time. Biological linen NATO straps are ideal for those desiring versatility and quick changes. Rubber is discouraged as it dilutes the minimalist character of the case. Your choice depends on intended use and seasonality.
How do I change the strap on the Longines Elegant L4.309.5.87.7?
Extract the two spring bars from the case using a dedicated tool or small flathead screwdriver. Gently press the inner pin of one spring bar until it emerges from its seat, then remove the old strap. Insert the new 13mm strap into the attachments, reinsert the spring bars into their seats, ensuring the pins are correctly positioned. Verify that the strap is fixed symmetrically before wear.
Does the Longines Elegant L4.309.5.87.7 accept compatible aftermarket straps?
Yes, the Longines Elegant L4.309.5.87.7 accepts aftermarket straps provided they rigorously respect the 13mm lug width specification. Bespoke personalised straps from Milano Straps are constructed with build precision identical to OEM straps, available in premium materials such as alligator, vegetable-tanned calf and NATO. Compatibility is guaranteed when lug width is exactly 13mm.
How long does a leather strap last on the Longines Elegant L4.309.5.87.7?
A quality leather strap (alligator or vegetable-tanned calf) lasts an average of 3–5 years in daily wear, extending to 7–10 years with proper maintenance (periodic cleaning, drying after water contact, storage in dry conditions). Vegetable-tanned leather develops natural patina that may intensify over time. Durability depends on use, climate and care. Milano Straps straps include an 18-month warranty against manufacturing defects.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only