Strap for Conquest Automatic 41mm Blue Rubber

The lug width of the Longines Conquest L3.658.4.96.2 is 21mm. This measurement is the critical parameter for selecting a compatible strap. To verify it, position a digital calliper or ruler perpendicular to the case at the exact point where the strap inserts. At 21mm, you ensure a stable installation without play and gain access to the entire range of quality aftermarket alternatives.

For this model, genuine alligator offers the finest aesthetic harmony: its natural granular texture enhances the formal sophistication of the brushed case. Calf leather subjected to vegetable tanning is ideal if you wish a patina to develop over time. Shell cordovan represents the pinnacle of material exploration, with natural lustre and superior mechanical resistance. For operational use, NATO or FKM rubber maintain readability without functional compromise.

The strap is changed by removing the lug pins (spring bars) using a specialised pin extractor. Rest the watch on a stable base, locate the pins on both sides of the case, and with gentle, controlled movements, push the pin upward from below until it releases. Once the strap is removed, align the new strap with the seats, reinsert the pins, and verify alignment. If unfamiliar with this procedure, entrust the task to a professional watchmaker.

Any strap with a 21mm lug width is compatible. MilanoStraps offers a selection in alligator, calf, shell cordovan, NATO, and rubber, all tested for the Conquest. Customisation is available in strap length, initials, and thread colour. The Casati Milano atelier additionally creates bespoke made-to-measure straps with personal leather selection and an 18-month warranty.

Lifespan depends on leather quality and wear conditions. Superior-grade alligator and calf maintain functionality and appearance for 3–5 years with ordinary use and regular care (drying after moisture exposure, avoiding prolonged soaking). Shell cordovan, due to its superior density, can exceed 5 years. Exposure to perspiration, salt water, or intense UV radiation shortens lifespan. Proper storage—dry location, away from heat sources—significantly extends service life.