Technical Archive

Longines
Avigation L2.619.4.73.6— lug 20mm

Longines Avigation L2.619.4.73.6: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Avigation Automatic Stainless Steel / Silver / Bracelet

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Longines L2.619.4.73.6
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

L2.619.4.73.6

Movement

Longines caliber L619.2 Hours, Minutes, Seconds | Date

The Heritage

The Longines Avigation reference L2.619.4.73.6 is equipped with the L619.2 caliber with hour, minute, second and date functions. The watch features 20mm lugs and retains the typical characteristics of the Swiss brand's aviator collection. The movement offers essential indications for daily use with the convenience of the date display.

FAQ

What is the lug width of the Longines Avigation L2.619.4.73.6?

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.

Which strap is recommended for the Longines Avigation L2.619.4.73.6?

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.

How do I change the strap on the Longines Avigation L2.619.4.73.6?

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.

Is an aftermarket strap compatible with the Longines Avigation L2.619.4.73.6?

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.

How long does a leather strap last on the L2.619.4.73.6?

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.