Strap for Conquest Chronograph Quartz

The lug width of the Longines Conquest L3.660.4.56.6 is 21mm. This width is specific to the 41mm Conquest models and is critical for proper fit. An undersized strap will leave visible gaps between the lug and the strap, whilst an oversized one will not fit at all. To verify the correct measurement, place the case on a flat surface and measure the internal distance between the two lug pins.

For the Longines Conquest L3.660.4.56.6, several solutions are recommended depending on your desired style. Alligator with medium-to-large grain offers natural texture that balances the clean dial. Vegetable-tanned calf leather ages beautifully and develops characteristic patina. Shell cordovan from the horse's back offers compactness and longevity beyond ten years. A robust canvas NATO with rubber underside emphasises the watch's sporting vocation. Your choice depends on usage and personal aesthetic preference.

To change the strap on your Longines Conquest L3.660.4.56.6, position the watch on a flat surface with the lugs facing you. Use a dedicated tool to gently push the pins from the inside outwards, one per side. Do not use sharp objects like knives which could scratch the case. Once the pins are removed, extract the old strap. Position the new strap, align the holes with the lugs and gently push the pins until they click into place. Verify that the strap is secure before wearing the watch.

Yes, any strap with a 21mm lug width is compatible with the Longines Conquest L3.660.4.56.6. Numerous aftermarket options exist in various materials: leather (alligator, calf, shell cordovan, deer skin), fabric (NATO, canvas, silk), rubber and metal. Always verify the lug width before purchase. Online you will find ready-to-ship 21mm straps that are customisable in length, finishes and colours. For a bespoke experience, specialised ateliers create made-to-measure straps with personalised consultation.

The lifespan of a leather strap depends on material, construction quality and usage. A standard leather strap (calf, chèvre) typically lasts 3–5 years with daily wear. Shell cordovan, thanks to its natural compactness and fibre resistance, easily exceeds 10–15 years. Vegetable-tanned leather, whilst less robust than shell cordovan, develops a fascinating patina over time and remains wearable for longer. Maintenance (regular cleaning, drying after rain, annual conditioning) significantly extends the strap's lifespan.