Longines · Presence

Strap for Presence 34.5 Automatic Stainless Steel Silver Bracelet

Takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width18 mm
Case diameter35 mm
ReferenceL4.721.4.78.6 (aka: L47214786)
FamilyPresence
MovementLongines caliber L619.2 Hours, Minutes, 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

The Presence L4.721.4.78.6 (aka: L47214786), seen from the bench

The Longines Presence is equipped with the L619.2 caliber with hour, minute, second and date functions. The model features 18mm lugs and represents a classic proposal from the Swiss manufacture. The reference L4.721.4.78.6 is part of the collection dedicated to formal elegance.

Frequently asked questions

What is the lug width of the Longines Presence L4.721.4.78.6?

The lug width of the Longines Presence L4.721.4.78.6 is 18mm, as measured between the spring bar attachment points. This dimension determines compatibility with third-party straps. Use a digital calliper to verify this measurement precisely.

Which strap material is best suited for the Longines Presence L4.721.4.78.6?

For formal occasions, alligator leather offers understated sophistication. For daily wear, vegetable-tanned calfskin ages gracefully. Shell cordovan develops a deep patina over years of ownership. Vulcanised rubber provides water resistance and versatility, while a NATO strap delivers modern informality without compromising elegance.

How do I change the strap on the Longines Presence L4.721.4.78.6?

Position the watch on a soft surface. Locate the spring bar beneath the lug and use a strap-removal tool to extract it by inserting the tool into the release hole. Once the spring bar is removed, slip the old strap away and insert the new strap before reinserting the spring bar. The procedure takes approximately two minutes.

Can I fit an aftermarket strap to the Longines Presence L4.721.4.78.6?

Yes, any 18mm lug-width strap is compatible. Ensure the strap thickness (typically 3.5–4mm) matches the original specification so it sits evenly under the lugs without rattling. Bespoke straps from milanostraps.it are crafted to fit perfectly.

How long does a genuine leather strap last on a watch like the Longines Presence?

A leather strap typically lasts 3–5 years with moderate daily wear, depending on humidity, sunlight exposure and wearing frequency. Vegetable-tanned leather offers superior durability; shell cordovan develops character over 8–10 years without degrading. Casati Milano's 18-month warranty covers manufacturing defects.

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