Chopard
L.U.C 161973-1002— lug 20mm

The lug width of the Chopard L.U.C 161973-1002 is 20mm. This measurement is specific to this model and must be verified with a calliper between the two spring bar holes on each lug. Remove the original strap and measure the internal distance between the pins at the centre of the lug, avoiding the side edges.

We recommend Nile alligator with vegetable tanning for its regular scale pattern that balances the 45mm case, or vegetable-tanned calf in dark brown or black, which develops an elegant patina over time. Shell cordovan is the premium option for those seeking internal luminosity and refined colour variations. For more dynamic wear, FKM rubber with honeycomb texture offers functionality and aesthetic restraint.

Changing the strap requires a spring bar removal tool. Position the watch with the lugs facing upwards, insert the flat tip of the tool into the lateral hole of the lug to release the spring pin, then remove the pin and old strap. Align the new strap's pins with the lugs and press until you hear a click. Verify that the pin is fully seated before wearing the watch. If inexperienced, contact Casati Milano for assistance.

Yes, any quality strap with a 20mm lug width is compatible with the 161973-1002. Always verify that the internal distance between the spring bars is exactly 20mm and that the strap thickness does not exceed 4-5mm to ensure proper fit in the case lugs. Quality aftermarket straps often offer superior construction and customisation compared to original replacements.

A premium leather strap with vegetable tanning, worn daily, has an average lifespan of 3-5 years. Longevity depends on usage (humidity, perspiration, sun exposure), tanning quality and maintenance. Shell cordovan and alligator resist deterioration longer than standard calf. Casati Milano offers an 18-month warranty on its straps and can replace them easily when needed.