Jaeger-LeCoultre
Master Ultra Thin 13234E1— lug 20mm

The Jaeger-LeCoultre Master Ultra Thin ref. 13234E1 has a 20 mm lug width. This measurement is taken with a caliper inside the case lugs, at the narrowest point of the strap seat. All 20 mm straps from milanostraps.it are compatible with this reference.

For a white gold case like the 13234E1, a black or midnight blue smooth alligator strap is the most fitting choice in keeping with the model's formal character. Box calf leather is ideal for those seeking natural patina development over time. For less formal contexts, a high-end rubber strap or a silk NATO are valid options provided they harmonize with the case metals.

The strap is replaced using a dedicated springbar tool, a two-pronged instrument that compresses the spring bars inserted in the lugs. The operation takes just a few minutes and does not require opening the case. It is recommended to work on a soft surface to avoid scratching the white gold and to verify that the spring bars have the correct diameter for the 13234E1 lugs.

Yes. Any strap with a 20 mm attachment and standard spring bars is technically compatible with the Jaeger-LeCoultre Master Ultra Thin 13234E1. milanostraps.it offers a selection of handcrafted straps in various materials—alligator, calf, NATO, rubber—made to quality standards appropriate for the watch. For a fully customized solution, Casati Milano offers a bespoke service.

The lifespan of a leather strap depends on material, craftsmanship, and usage. Quality alligator leather with robust stitching and refined edges can last 3 to 5 years with regular wear. Calf leather tends to wear more quickly in the presence of perspiration or moisture. Casati Milano straps are covered by an 18-month warranty against manufacturing defects and are made with selected leathers that guarantee durability and natural patina development over time.