Zenith
Chronomaster Original 16.3200.3600/03.C906— lug 20mm

The lug width is 20 millimeters. This measurement is determined by the geometry of the spring bar attachments integrated into the 38mm case. To verify it, measure directly the space between the two spring bars with a ruler positioned perpendicular to the case. It is critical to order straps with this exact width: 18mm or 22mm will not fit correctly.

Black alligator leather with fine grain is the classic choice, which enhances formality and pairs perfectly with the black dial. Vegetable-tanned calf leather in cognac brown tone offers softness and ages with elegance. For a more sporty style, NATO in Cordura with leather backing guarantees versatility and functionality.

Remove the watch from your wrist and position it with the dial facing down. Locate the two spring bars (spring bar attachments) at 12 and 6 o'clock. With a dedicated tool or a toothpick, gently press the spring bar pin toward the inside of the case, creating space to insert the new strap. Proceed one side at a time. Ensure the strap is centered and that the passage over the case is smooth before wearing the watch again.

Yes, any 20mm strap with standard spring bar attachments is compatible. However, to maximize elegance and longevity, it is advisable to choose higher quality straps: vegetable-tanned leather, genuine alligator, or NATO in certified Cordura canvas. Milano Straps offers curated selections specifically for the geometry of this model.

A quality leather strap (vegetable-tanned alligator or percale calf) lasts an average of 3-5 years with daily use, depending on exposure to sunlight, humidity, and mechanical stress. The natural patina that develops is a sign of aesthetic aging, not functional wear. Custom straps from Casati Milano include an 18-month warranty and regeneration options.