Longines · Heritage

Strap for Heritage 1918

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter41 mm
ReferenceL2.809.4.23.2
FamilyHeritage
MovementLongines caliber L615.3 Hours, Minutes, Small Seconds | Date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Heritage L2.809.4.23.2

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Heritage L2.809.4.23.2, seen from the bench

The Longines Heritage L2.809.4.23.2 is a refined interpretation of Longines's Heritage collection, featuring a 41mm stainless steel case with gently curved profiles and smooth bezel echoing 1960s design language. The dial comes in neutral tones from black to blue with baton indices and luminous hands for readability in low light. Powered by the Longines L615.3 automatic movement with date display and small seconds, the watch offers 300 meters water resistance suitable for daily wear and dynamic use. The 20mm lug width is the consolidated standard for sports watches of this size and category.

Frequently asked questions

What is the lug width of the Longines Heritage L2.809.4.23.2?

The Longines Heritage L2.809.4.23.2 features a standard 20mm lug width. This size is universal for most aftermarket watch straps and provides an extensive selection of materials, colours, and finishes. You can verify compatibility by measuring the distance between the two spring bar pins that attach the strap to the case.

Which strap do you recommend for the Longines Heritage L2.809.4.23.2?

For this Heritage model, we recommend an alligator strap in black or deep brown for authentic sporty-elegant appeal, or full-grain vegetable-tanned leather that develops a rich patina over time. A double-locking deployant clasp is important to prevent accidental opening. For more casual wear, a robust nylon NATO strap offers excellent practicality.

How do I change the strap on my Longines Heritage L2.809.4.23.2?

You will need a spring bar tool (a small dedicated device). Place the watch on a soft surface, insert the tool into the small hole at the base of the lug, press gently inward to lift the spring pin, and remove the previous strap. Repeat on the opposite side. Installation of the new strap works exactly in reverse. The entire process takes less than 5 minutes and does not compromise your watch.

Can I use an aftermarket strap on my Longines Heritage L2.809.4.23.2?

Yes, absolutely. Any strap with a 20mm lug width is perfectly compatible. Milano Straps' artisanal straps are made specifically for this width and available in various finishes, leathers, and colours. Always verify that the strap is indeed 20mm before purchase.

How long does a leather strap last on the Longines Heritage L2.809.4.23.2?

A quality leather strap (alligator, calf, vegetable tanning) typically lasts between 3 and 6 years with daily wear, depending on the material and maintenance. Milano Straps' straps, crafted with premium leathers, carry an 18-month guarantee. With regular cleaning and protection from excessive moisture, longevity increases significantly. Leather patinas naturally, improving in appearance over time.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only