Strap for Conquest Classic Automatic 29.5 Stainless Steel / Diamond / Black

The lug width of the Longines Conquest Classic L2.285.0.57.6 is 15mm. This measurement must be taken precisely from the centre of one lug hole to the centre of the other lug hole, perpendicular to the case plane. A tolerance of ±0.5mm is generally acceptable, but for optimal comfort and proper fit, precise verification is strongly recommended.

For the Conquest Classic L2.285.0.57.6, we recommend premium alligator leather or vegetable-tanned calf leather. Alligator offers natural sophistication with an irregular grain pattern that complements the watch's timeless design. Vegetable-tanned calf develops a unique patina over time, conferring character and individuality to the strap. For those seeking versatility, a linen NATO or vulcanised FKM rubber are valid alternatives for intensive daily wear.

To change the strap, gently remove the spring bars connecting the lugs to the case using a dedicated tool. Insert the tool into the small hole beneath the bar, push it towards the opposite side until it protrudes, then extract it completely. Repeat for the second bar. Insert the new bars into the strap, align them with the case holes and press firmly until you hear a slight click confirming the lock. Verify that the strap is secure before wearing the watch.

Yes, provided the strap is manufactured for a 15mm lug width. The Conquest Classic L2.285.0.57.6 accepts any quality aftermarket strap that meets this specification. We recommend verifying that the strap has compatible spring bars (typically stainless steel with 1.4–1.5mm diameter) and that the total strap width does not exceed 16mm to avoid friction at the case edges. Bespoke straps crafted to your exact specifications ensure maximum dimensional precision and superior aesthetic experience.

A quality leather strap with vegetable tanning or alligator construction typically lasts 3–5 years with regular daily use. Longevity depends on: frequency of wear, climatic conditions (humidity and heat accelerate ageing), direct sun exposure and strap care. Periodic applications of natural conditioning oil (such as beeswax) significantly extend lifespan. A vulcanised rubber strap resists longer in humid environments or intense activity, reaching 7–8 years. The natural patina of a leather strap is integral to its appeal and does not diminish functional value, save for structural deterioration.