Strap for Conquest Classic Moonphase Stainless Steel - Red Gold / Silver / Bracelet

The lug width of the Longines Conquest Classic L2.798.5.72.7 is 21.00mm. This dimension refers to the internal distance between the two case lugs where the strap is fitted. It is a particularly common size in high-end chronograph wristwatches and is critical to ensure a perfect fit without excessive play or undulation.

Multiple materials are recommended depending on usage and aesthetic preference. Smooth alligator remains the conservative choice for a formal appearance; structured or aged calf leather with vegetable tanning offers natural texture that balances the sporty character. For more technical applications, a quality FKM rubber guarantees waterproofing without stylistic compromise. Shell cordovan offers, instead, unique patina development over time.

The strap is removed using a spring bar tool, a small flat instrument that allows you to depress the internal spring securing the lug to the case. Position the tool on one of the lugs, press downward to release the spring, then extract the old strap. To mount the new one, align the pins with the case holes and press until the spring engages. Repeat on the other side. This is a straightforward operation if performed carefully.

Yes, any strap with a 21mm lug width is compatible with the Longines Conquest Classic L2.798.5.72.7, provided it is correctly dimensioned in length. Compatibility depends on precise measurement of the space between the lugs and the construction quality of the strap, which must respect tight tolerances to avoid excessive play or tension on the case.

The lifespan of a leather strap depends on tanning quality and usage. A well-crafted structured leather or alligator strap maintains aesthetic integrity for 3-5 years with daily wear. Leather aged with vegetable tanning tends to develop appealing natural patina, improving visually over time. Factors such as humidity, perspiration, and sun exposure directly influence longevity.