Strap for Spirit Automatic 42 Silver / Strap XL

The Longines Spirit L3.811.4.73.4 features a lug width of 22mm. This measurement is standard for Spirit models of this generation and accommodates watch straps with a tolerance of 20–22mm, compatible with standard buckles and deployante clasps.

Your choice depends on intended use: for authentic aviator styling, select a NATO in military-grade textile—anthracite grey or sage green. For formal elegance, alligator in medium brown or cognac shell cordovan develop natural patina over time. Vulcanised rubber is ideal for humid environments and aquatic sports.

Extract the spring bars from the case using a dedicated spring bar tool or consult a watchmaker. Position the new strap on the bars, insert the spring bars into the lateral slots and verify secure attachment. For leather straps, allow 24 hours drying time after installation before wearing.

All straps with a 22mm lug width are compatible, provided buckles and deployante clasps meet standard specifications. We recommend artisanal straps in alligator, shell cordovan, vegetable-tanned calfskin and NATO—available on milanostraps.it with custom sizing options.

An alligator or vegetable-tanned shell cordovan strap lasts 4–6 years with moderate daily wear when properly maintained. Vegetable-tanned calfskin has a lifespan of 2–4 years. Natural leather ageing is integral to its appeal: patina tells the story of time. Milano Straps straps include an 18-month warranty.