Technical Archive

Longines
Conquest Classic L2.286.4.87.6— lug 15mm

Longines Conquest Classic L2.286.4.87.6: 15mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Conquest Classic Quartz 29.5 Stainless Steel / MOP

Artisanal Note

"This model requires a precise 15mm lug width to preserve the original sartorial balance."

Lug Width

15 mm

The essential strap measurement.

Browse 15mm straps →

Reference

L2.286.4.87.6

Movement

Longines caliber L152 Hours, Jumping Minutes, Seconds | Date

The Heritage

The Longines Conquest Classic L2.286.4.87.6 is a 29.5mm stainless steel watch with a 15mm lug width, representing a contemporary evolution of Swiss watchmaking heritage since 1832. It features the L152 automatic movement with jumping minute, seconds and date functions, combined with a 904L stainless steel case, anti-scratch sapphire crystal and screw-down crown. The dial features the characteristic micro-grained texture typical of Conquest models with applied steel hands.

FAQ

What is the exact lug width of the Longines Conquest Classic L2.286.4.87.6?

The lug width of the L2.286.4.87.6 is 15mm, an uncommon standard requiring specifically dimensioned straps for this model. Verify it by measuring from the base of the case to the inner edge of the lug with a digital calliper.

Which strap material best complements the Longines Conquest Classic?

For the L2.286.4.87.6, we recommend genuine alligator for formal elegance, vegetable-tanned calf leather for daily versatility, or shell cordovan for those seeking durability with natural patina development. Vulcanised rubber is ideal for sports and recreational use.

How do I change the strap on a Longines Conquest Classic?

Gently remove the thin side spring bars from the case lugs using a flat tool (e.g., a strap removal tool). Insert the new strap, ensuring the lugs align correctly to the 15mm width specification, and reposition the spring bars. Verify smooth movement without friction.

Can I use an aftermarket strap on this Longines?

Yes, any strap with the correct lug width (15mm) is compatible with the L2.286.4.87.6. Milano Straps offers a collection of hand-crafted 15mm straps customisable in leather, colour and finishes, guaranteed for 18 months by atelier Casati Milano.

How long does a leather strap last on a watch like this?

A quality hand-crafted leather strap with vegetable tanning and reinforced stitching typically lasts 3–5 years with daily wear. Longevity depends on wear frequency, ambient humidity and care: protection from excessive perspiration and direct water contact will extend the strap's lifespan.