Strap for Conquest Classic Automatic 29.5 Stainless Steel / Red Gold / Diamond / MOP / Bracelet

The lug width of the Longines Conquest Classic L2.285.5.88.7 is 15mm. This measurement is specific to this model and derives from the proportional relationship between the case diameter (29.5mm) and the lug attachment geometry. To verify compatibility, measure the space between the two lugs using a digital calliper on the internal width (net distance between the lug shoulders).

For the Conquest Classic L2.285.5.88.7, we recommend an alligator with medium grain in cognac brown or black, which respects the elegant yet sporty character of the watch. Alternatively, vegetable-tanned calf leather develops a patina over time, which collectors greatly appreciate. For greater versatility, a polyamide NATO in anthracite grey or a vulcanised rubber strap are practical and durable solutions.

To change the strap, remove the watch from your wrist and locate the spring bars that secure the strap to the case. Use a spring bar tool to gently depress the small internal pin and slide the attachment out of its seat. Repeat on the other side. Insert the new 15mm strap in the same manner, ensuring that the spring bars click correctly into the lateral seats of the case.

Yes, it is entirely possible and recommended. A quality 15mm aftermarket strap in alligator, calf leather or NATO offers perfect mechanical compatibility with your L2.285.5.88.7. The choice of premium materials and artisanal finishing allows you to personalise your timepiece compared to the original strap, improving comfort and aesthetics according to your style.

The lifespan of a leather strap depends on use and maintenance. A quality alligator or calf strap, worn daily with care, typically lasts 3–5 years before showing significant signs of wear. Excessive exposure to moisture, chlorine and perfumes reduces longevity. With proper maintenance (regular cleaning and water-repellent treatments), you can extend the life to 6–7 years. Casati Milano offers an 18-month warranty on custom-made straps.