Longines
Conquest Classic L2.286.3.87.7— lug 15mm

The lug width of the Longines Conquest Classic L2.286.3.87.7 is 15mm. This specific measurement represents the space between the two lugs on the case where the strap seats. It is a non-standard size in the watchmaking panorama, so straps must be carefully selected from dedicated collections. To verify, use a digital calliper measuring the internal wall-to-wall distance of the lug groove.

The best strap depends on usage and stylistic preference. Alligator represents the classic choice, with uniform grain that enhances the timeless elegance of the stainless steel case. For those who appreciate aesthetic evolution over time, vegetable-tanned leather imparts a unique personal patina. Calf box is ideal for those seeking durability and daily wearability. Milano Straps offers a complete collection of 15mm straps in all these materials, with customisation in sizes, initials and thread colour.

Changing the strap on the L2.286.3.87.7 requires specific tools: a spring bar tool and a stable, well-lit work surface. Position the watch at 3 o'clock, insert the tool blade into the small gap between the lug and the strap, gently breaking the underlying spring. Once the spring releases, the old strap comes away easily. Repeat the procedure at 9 o'clock. Insert the new strap by housing the rear hole to the lug first, then press firmly until you hear the spring click into place. If unsure, Casati Milano offers a strap change service with personalised consultation.

Yes, a quality aftermarket strap is fully compatible and often advisable. The advantage lies in the ability to choose superior materials (genuine alligator, vegetable-tanned leathers) and customise sizes, initials and thread colour to your preferences. Milano Straps produces artisanal 15mm straps constructed to standards that maintain the technical rigour of original Longines straps, adding a sartorial elegance component that the Conquest Classic fully deserves.

The lifespan of a leather strap depends on the material and usage. A quality alligator strap typically lasts 3-5 years with regular maintenance (occasional cleaning, protection from excessive humidity). Vegetable-tanned leather evolves aesthetically over time and can last 5-7 years, especially if treated with specific conditioners. Calf box, due to its constructive density, often resists up to 6-8 years. Milano Straps guarantees 18 months on all straps made at the Casati Milano atelier, with the possibility of subsequent maintenance and reconditioning.