Strap for Spirit Chronograph 42 Black / Strap

The lug width of the Longines Spirit L3.820.4.53.0 is 22mm. This standard measurement allows you to pair a wide range of aftermarket straps whilst maintaining correct optical proportions relative to the 42mm case. To verify the measurement, remove the original strap and measure the distance between the pins that attach to the case.

The choice depends on your intended use. For formal elegance, we recommend alligator or vegetable-tanned calf leather in cognac or black. For daily wear, Tuscan leather develops rich patina over time. For sports and casual environments, canvas NATO or rubber straps offer versatility without aesthetic compromise. All materials are available in 22mm lug width.

You'll need a spring bar tool (sprizzatore). Locate the two fixing pins on either side of the case, gently release them by pressing with the tool, then remove the old strap. Insert the new strap in the same position, ensuring the pin locks firmly on both sides of the case. If unsure, a specialist artisan like Casati Milano can perform the operation in minutes.

Yes. Any quality artisan strap with 22mm lug width is compatible with this model, provided the width is precise. Milanostraps offers 22mm straps customisable in leather type, colour, initials, and stitching thread. Always verify that your chosen strap has exactly 22mm lug width for a perfect fit.

Durability depends on the material and usage intensity. A vegetable-tanned calf strap lasts 2–3 years with intensive daily use, developing characteristic patina. Alligator can last 5–7 years. Natural leather ages nobly; creases and scratches are signs of authenticity and history. Casati Milano guarantees 18 months on all bespoke straps, with regeneration and restoration services available at the atelier.