Strap for El Primero Chronomaster Skeleton 45 Stainless Steel / Bracelet

The lug width of the Zenith El Primero 03.2522.400/69.M2280 is 22mm. This dimension represents the internal spacing between the case lugs where the strap is fitted. Always verify this measurement before ordering an aftermarket strap to ensure full compatibility.

For the Chronomaster Original 45mm we recommend alligator leather with vegetable tanning in brown or dark chocolate shades. This material highlights the vintage DNA of the El Primero movement and creates visual contrast with the stainless steel case, maintaining aesthetic coherence with 1960s–1970s sports chronographs.

Position the watch on a stable surface with the caseback facing upward. Use a spring bar removal tool to gently push the metal pins that secure the strap. Once the pins are extracted, the old strap will detach and you can insert the new one. Ensure the new strap has a 22mm lug width for a perfect fit.

Any strap with a 22mm lug width is compatible with the 03.2522.400/69.M2280. At milanostraps.it you will find a selection of handcrafted straps in alligator, calf leather, shell cordovan and FKM rubber, all available with customisation options.

The lifespan of a leather strap depends on usage intensity and material quality. An alligator strap with vegetable tanning can last 5–7 years with regular use, developing a natural patina over time. Casati Milano straps offer an 18-month warranty and can be restored through leather reconditioning services.