Zenith
Academy 39.2210.8804/58.C714— lug 20mm

The lug width is 20mm, measured internally between the bases of the two lugs on the case. To verify this measurement on your case, use a digital caliper, positioning the tips in the lug seats. The strap should be selected at exactly 20mm to avoid play or friction during changes.

For this platinum reference, we recommend Mississippi alligator or French Nile leather with well-defined natural grain, or Hermès calf with evolving patina. Alternatively, FKM rubber for intensive daily use. Avoid military NATO straps, which appear aesthetically incongruous with the metallurgical refinement of the platinum case.

Use a spring bar tool to gently compress the spring bar retention spring (elastic pin) positioned beneath the case. Remove the old strap from the two spring bars, then insert the new strap ensuring the spring bar clicks correctly into its seats. Proceed with care to avoid damaging the platinum case.

Yes, any strap in 20mm width is compatible. However, to maintain consistency with the Academy's manufacturing quality, we recommend artisanal straps made from premium leathers (alligator, calf) rather than industrial alternatives. Milano Straps and the Casati Milano atelier offer custom straps calibrated specifically for this reference.

A quality alligator or calf strap, with ordinary maintenance (drying after prolonged water contact, occasional cleaning), has an average lifespan of 4-6 years with daily wear. Critical factors are ambient humidity, direct sun exposure, and frequency of use. Casati Milano provides an 18-month warranty on its artisanal straps, with the possibility of structural regeneration afterward.