Strap for Spirit 36

The lug width of the Longines Spirit L2.699.4.23.6 is precisely 18mm. This measurement is the distance between the two lugs protruding from the case. Measuring the lug width accurately is essential for selecting a compatible strap without error.

There is no single 'best' option, but several choices depending on use case. Alligator leather offers elegance and develops patina over time. Vegetable-tanned calf provides softness and daily comfort. Synthetic rubber ensures practicality and moisture resistance. Shell cordovan represents the pinnacle of artisanal craftsmanship.

The strap is replaced by removing the two springbars from the lugs with a dedicated tool. Position the new strap, reinsert the springbars, and verify they are secure. If you lack experience, consult a professional watchmaker or Atelier Casati Milano.

Yes, provided the strap is specifically designed for 18mm lug width. High-quality aftermarket straps—alligator, calf, NATO—are fully compatible and often offer greater aesthetic variety than original Longines straps.

A quality natural leather strap—alligator or vegetable-tanned calf—typically lasts 3-5 years with daily wear, depending on care and moisture exposure. Atelier Casati Milano offers straps with 18-month warranty and scheduled renewal options.