Strap for Speedmaster Moonphase Chronograph Master Chronometer Yellow Gold / Silver

The lug width of this reference is 21 mm. This dimension defines the width of any compatible strap and is measured directly between the spring bars of the case, from inner to inner.

Vegetable-tanned alligator in black or dark brown amplifies elegance while maintaining sportiness. Vegetable-tanned calf (1.2-1.4 mm) offers comfort and natural patina over time. Structured rubber celebrates the instrumental spirit. We recommend avoiding synthetics and pastels to preserve the aesthetic gravity of the watch.

Strap replacement is accomplished via the spring bars positioned at the extremities of the case. With a spray of light oil, insert the spring bar tool under the spring, gently lever outward until the click of release, remove the old strap and insert the new one while keeping the spring pressed until the new click of fastening.

Yes, the 21mm lug width is widely covered by quality artisanal straps. Online on milanostraps.it you will find a wide selection of 21mm straps ready for shipment, customizable in additional sizes, initials and stitching thread color. The Casati Milano atelier also offers custom-made services with 18-month warranty.

A quality artisanal vegetable-tanned leather strap, if properly maintained, lasts an average of 3-5 years in daily use. Durability increases significantly with periodic rotation between multiple straps (recommended every 2-3 days) and with quarterly cleaning with a damp cloth and air drying. Alligator and shell cordovan last longer thanks to their denser and more structured fiber.