Strap for Conquest Chronograph Quartz 35

The lug width of the Longines Conquest L3.279.4.76.6 is 17.00mm. This dimension, measured between the attachment points of the case, falls within the less common specifications in contemporary catalogues and requires straps specifically dimensioned to avoid looseness or excessive tightness.

For the Conquest L3.279.4.76.6, we recommend straps in satin-finished alligator, aniline-dyed vegetable-tanned calf, or shell cordovan. The choice depends on intended use and dial colour. Satin alligator in grey or brown offers understated elegance; calf leather develops natural patina over time; shell cordovan guarantees durability and a texture that ages beautifully.

Strap replacement requires a spring bar tool. Insert the flat tip of the tool into the shallow groove between the case lug and the strap, pushing downward to release the internal spring. Repeat on both sides, then remove the old strap and insert the new one, ensuring the springs lock into position.

Yes. Any strap with a 17mm lug width is compatible with the Conquest L3.279.4.76.6. Always verify that the strap is correctly dimensioned: a tolerance of 0.5mm is acceptable, but beyond that introduces risks of internal spring loosening.

Durability depends on usage, material, and care. A strap in alligator or calf leather, subjected to moderate daily use, maintains structural integrity for 3–5 years. Constant exposure to humidity, perspiration, and UV rays reduces this term. Applying leather conditioner every 6–12 months significantly extends the lifespan of the strap.