Strap for Speedmaster X-33 Titanium / Kevlar / Military

The lug width of the Omega X-33 / Z-33 318.92.42.79.01.001 is 20 millimetres. This measurement is determined by the distance between the two spring bars – the elastic pins that hold the strap in place – and is the specification to use when ordering a compatible replacement strap.

The choice depends on your usage: for everyday elegance, we recommend cognac alligator or vegetable-tanned calf; for extreme instrumentation, a NATO nylon strap or technical rubber maintains coherence with the watch's space-age identity. Shell cordovan represents the ideal compromise between durability and aesthetic refinement.

Use a spring bar tool (available online or from watch specialists) to compress the elastic pins and extract them from the anchor slots on the case. Position the new strap over one of the lugs, insert the spring bar into the thin guide, push it until it clicks into place. Repeat on the other lug. Proceed with care to avoid scratching the titanium.

Original Omega straps are constructed to proprietary specifications and attest to authenticity. Quality aftermarket straps (such as those from Casati Milano) use equivalent or superior leathers, offer custom sizing and colour options, maintain perfect dimensional compatibility, and develop natural patinas over time that rigid Omega straps do not allow.

A quality artisanal leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily use, depending on humidity exposure and maintenance frequency. Vegetable-tanned straps develop a protective patina over time. Casati Milano's warranty covers 18 months, and straps can be professionally regenerated to extend their lifespan.