Strap for Avigation Oversize Crown 24 Hours

The Longines Heritage L2.778.4.53.2 features a lug width of 20 millimetres. This measurement is standard for the model and accommodates watch straps with straight or slightly tapered terminals. To verify it precisely, measure the distance between the horizontal lugs using a calliper or flexible ruler.

The ideal strap depends on your intended use. For formal contexts, we recommend alligator with vegetable tanning or calf leather with fine grain: both age elegantly whilst developing natural patina. For a sporty approach, a NATO fabric strap or vulcanised rubber interprets the watch's heritage character with contemporary sensibility. For daily practicality, robust calf with steel deployante buckle offers an optimal balance between aesthetics and functionality.

Changing the strap is straightforward: remove the watch from your wrist and, using a spring bar tool or a thin, blunt object, gently press inward one of the horizontal lugs. This releases tension and allows you to extract the pin. Repeat on the other side, then align the new strap's holes with the lug ends and reposition the pins until they click into place.

Yes, all straps with a 20mm lug width are fully compatible. Online retailers and specialist ateliers offer a wide range of leathers, fabrics and rubbers. Ensure the strap has straight terminals or, if curved (tapered), that they fit the geometry of your lugs. Quality straps offer longevity comparable to the watch itself.

The lifespan of an artisanal quality leather strap ranges from 3 to 7 years depending on intensity of use, exposure to moisture and maintenance. Vegetable-tanned leather develops natural patina over time and, if cared for (avoiding prolonged immersion and drying after humidity), can remain functional and aesthetic for many years. NATO fabric straps have greater durability but less vintage character.