Strap for HMS1

The lug width of the 1LCAS.S02A.C111S is 20 millimetres. This measurement denotes the distance between the two lateral case pins and is critical for purchasing compatible straps. You may verify this directly with a digital calliper or by consulting the original technical documentation provided with the timepiece.

For refined daily wear, we recommend either vegetable-tanned alligator or Italian calf leather of superior grade. Vegetable-tanned alligator develops a natural patina over time, creating visually pleasing ageing. Italian calf, particularly in dark shades (brown, burgundy), offers tactile softness and aesthetic compatibility with the stainless steel case. Both materials are available with classical buckles or steel deployantes.

Strap replacement involves extracting the lateral pins from the case using a dedicated tool (spring pin remover). Position the case on a soft surface, insert the tool into the pin aperture on the inner side and gently extract. Once the first pin is liberated, the strap may slide away. Align the new strap's holes with the case attachments, then reintroduce the pins ensuring they are securely locked. If you lack the specialised tool, consultation with a qualified watchmaker is advisable.

Yes, absolutely. Any strap with a 20-millimetre lug width is compatible. Milano Straps provides artisanal straps maintaining construction standards equivalent to or superior to factory originals, through judicious leather selection, stitch quality, and geometric precision. We recommend verifying the exact lug width before purchase and selecting straps with correctly calibrated apertures.

Longevity depends on material grade, usage patterns and storage conditions. A quality vegetable-tanned alligator strap may endure 5–8 years of moderate daily wear. Italian calf, being more delicate, offers comparable longevity but requires regular maintenance (drying after humidity exposure). A NATO strap resists wear for 7–10 years without significant degradation. The buckle and passants represent critical stress points; timely replacement of worn elements prevents unexpected failure.