Strap for Conquest Chronograph Blue Bracelet

The lug width of the Longines Conquest L3.662.4.96.6 is 21mm. This measurement refers to the distance between the two spring bar attachment points and is a specific construction characteristic of this model. Any aftermarket strap must have the spring bar holes positioned exactly 21mm apart to ensure compatibility and correct operation.

The best strap for the Conquest L3.662.4.96.6 is made from black or dark brown alligator leather, a material that maintains aesthetic coherence with the model's sport-elegant identity. Alligator offers natural texture, construction flexibility and superior structural rigidity compared to other leathers. Alternatively, smooth grey pearl calf leather or a vegetable-tanned strap represent valid choices depending on intended use and personal aesthetic preference.

To change the strap, use a spring bar tool to compress the spring-loaded pins positioned at the lug attachments. Once the pins are compressed, the strap can be extracted from the sides. The new strap must be correctly aligned with the spring bar holes before inserting the pins. It is essential to verify that the pins are fully locked in the attachments to prevent accidental watch drop.

An aftermarket strap is compatible with the Longines Conquest L3.662.4.96.6 provided that the lug width is exactly 21mm. The distance between the spring bar holes must match the model's construction specifications. Straps available online for this size are generally compatible. For construction warranty and personalised manufacture, it is advisable to consult a specialised atelier such as Casati Milano.

The lifespan of a leather strap depends on the material and frequency of use. A quality alligator strap, subject to moderate daily use, maintains structural integrity and elasticity for 3-5 years. A vegetable-tanned strap develops visible patina over time and can last 4-7 years with proper maintenance. Prolonged exposure to humidity, perspiration and thermal variations accelerates wear. Periodic maintenance with leather-specific creams significantly extends strap lifespan.