Strap for Military 1938 Chronograph

The lug width of the Longines Heritage L2.790.4.53.0 is 19mm. This measurement is specific to this model and requires straps designed precisely for this dimension. To verify the lug width of your watch, use a calliper or measuring tape between the lugs and record the internal distance. Compatible straps with this lug width are available both online and at the Casati Milano atelier.

For the Longines Heritage L2.790.4.53.0, alligator leather remains the classic reference choice: its fine grain maintains elegance without adding visual mass to the 42mm case. Vegetable-tanned calf leather offers a more tactile alternative, capable of developing authentic patina over time. For a sporty and versatile profile, a textile NATO strap ensures stability through the pass under the lug. FKM rubber guarantees robustness in dynamic and daily contexts.

To change the strap, place your watch on a soft surface to prevent scratches. Use a spring bar tool to push the elastic pin and free the lugs from the case shoulders. Remove the old strap, then insert the new one by aligning the pins with the slots and pressing until they click. Verify that the strap is securely fastened before wearing the watch. If you prefer to avoid risk, the Casati Milano atelier offers this service with utmost care.

Yes, aftermarket straps are fully compatible with the Longines Heritage L2.790.4.53.0, provided the lug width is exactly 19mm. Milano Straps online straps are crafted artisanally for this measurement and offer customisation in leather, colour, sizing and thread. The Casati Milano atelier also creates bespoke straps with personal leather selection and an 18-month warranty.

The lifespan of a leather strap depends on usage, material quality and care. Excellent quality alligator or calf leather typically lasts between 3 to 5 years of daily use, developing patina over time that enhances its character. With vegetable tanning, the strap evolves visibly, showing signs of wear that testify to authenticity. Casati Milano provides an 18-month warranty on all bespoke straps, whilst online straps are supported by a dedicated assistance network.