Strap for Avigation Automatic Stainless Steel / Silver / Bracelet

The lug width of the L2.619.4.73.6 is 20mm. This dimension is historical for Longines aviator models and is proportioned to the 38.50mm case diameter. Always verify by measuring from the inside of one lug to the inside of the other before ordering a strap.

An alligator strap in vegetable tanning with a dark brown or red tone emphasises the classic avionic character. Alternatively, Annecy calf, shell cordovan or vulcanised FKM rubber maintain coherent aesthetics. Choice depends on usage: leather for elegance, rubber for practicality.

Remove the watch from your wrist. Locate the spring bar extractors (lug pins) on the sides of the case. Using the appropriate tool, gently lift one of the internal springs, extract the pin, then unfasten the old strap. Reverse the process with the new strap. If inexperienced, have a watchmaker assist you.

Yes, provided the strap is specifically designed for 20mm lug width. Generic 20mm straps fit physically. We recommend quality leathers (alligator, vegetable-tanned calf) and finishes that respect the original avionic aesthetics.

A quality leather strap (natural alligator, Tuscan calf, shell cordovan) lasts 5-8 years with regular wear and maintenance. Factors include humidity, frequency of wear, tanning type. Vegetable tanning ages elegantly; chrome tanning requires less maintenance but less aesthetic personality.