Strap for Spirit Zulu Time 42 Grey / Strap

The lug width of the Longines Spirit L3.812.4.63.2 is 22mm. This measurement refers to the internal space between the spring bars where the strap sits. To verify accurately, place a ruler between the two lug holes without including the bars themselves. The 22mm is the standard construction that Longines maintains to achieve balanced optical proportions on a 42mm case.

For this timepiece, we recommend alligator straps in black or vegetable-tanned blue leather, which maintain the avionic vocation of the model. If you prefer a more versatile daily solution, our NATO straps in regenerated Italian fabric offer practicality and durability. For an authentic tactile experience, the Casati Milano atelier creates bespoke straps with personally selected leathers and an 18-month warranty.

The Longines Spirit L3.812.4.63.2 features standard 22mm spring bars. Acquire a spring bar tool and follow these steps: position the tool in the designated slot to compress the spring, remove the bar from the case, take off the old strap, and insert the new one aligning it with the holes. Finally, reposition the bar in the case. Alternatively, our partners can perform the change free of charge upon purchase of an artisanal strap.

Yes, all straps with a 22mm lug width are compatible with the Longines Spirit L3.812.4.63.2. Always verify that your strap is constructed for this exact measurement. Our straps on MilanoStraps are certified 22mm and available in various personalised lengths to fit your wrist perfectly. The Casati Milano atelier can further adjust the length to measure during a personal consultation.

A quality leather strap (such as those in alligator or vegetable-tanned calf that we recommend for the Longines Spirit L3.812.4.63.2) has an average lifespan of 4–7 years with daily wear, depending on frequency of use and exposure to external factors. Vegetable-tanned straps develop natural patina that improves over time. Our artisanal strap warranty is 18 months. Regular maintenance (cleaning with a damp cloth, annual leather conditioning) significantly extends lifespan.