Jaeger-LeCoultre
Master 1663406 (aka: Q1663406)— lug 20mm

The Jaeger-LeCoultre Master Grande Tradition reference 1663406 (Q1663406) is fitted with a 20 mm lug width. This measurement is taken with a digital caliper positioned between the two lugs at the strap attachment point. All Milano Straps straps with 20 mm attachment are compatible with this model.

For the 1663406 in white gold, a mississippiensis alligator strap is the most appropriate choice, reflecting the haute horlogerie positioning of the piece. Grain hornback, with its three-dimensional texture, complements the chiseled dial finishes. Midnight blue and anthracite grey are the colors that best enhance the white gold case, while box-calf leather represents the ideal alternative for daily wear.

Replacing the strap on the Master Grande Tradition 1663406 requires a fine-tipped spring bar tool to remove the attachment bars from the case lugs. Given the complexity and value of the movement, it is advisable to entrust the work to a qualified watchmaker or use a nylon spring bar tool to avoid scratching the white gold case. Casati Milano offers assistance with strap replacement during bespoke sessions in the atelier.

Yes. The Jaeger-LeCoultre Master 1663406 uses a standard 20 mm attachment compatible with a wide range of quality aftermarket straps. On milanostraps.it you will find a dedicated selection of 20 mm straps in alligator, calf leather, and other materials, handcrafted and calibrated to ensure a precise fit on the 1663406 lugs without play or tension.

The lifespan of a leather strap depends on the material, frequency of use, and daily care. A quality alligator strap, with hand-stitching and natural leather finishing, can accompany a watch like the 1663406 for 3-5 years with regular use. Milano Straps straps include an 18-month warranty against manufacturing defects. To extend the strap's life, it is recommended to avoid prolonged exposure to moisture, perspiration, and direct sunlight.