Longines · Presence

Strap for Presence 25.5 Automatic Stainless Steel / Silver - Mixed / Bracelet

Takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width13 mm
Case diameter26 mm
ReferenceL4.321.4.75.6 (aka: L43214756)
FamilyPresence
MovementLongines caliber L561 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 L4.321.4.75.6 (aka: L43214756), seen from the bench

The Longines Presence reference L4.321.4.75.6 is equipped with the L561 caliber, which indicates hours, minutes, seconds and date. The watch features 13mm lugs and is part of the brand's Presence collection. The movement provides the essential functions with the convenience of the date indication.

Frequently asked questions

What is the lug width of the Longines Présence L4.321.4.75.6?

The lug width is 13mm. This measurement represents the distance between the two attachment points of the strap on the case. Always verify this dimension using a digital calliper, measuring the inner centre of both metal springbar pins, to ensure complete compatibility with aftermarket straps.

Which strap material is most suitable for the Longines Présence L4.321.4.75.6?

Premium alligator with fine grain in natural colourways such as medium brown or cognac is ideal, emphasising the compactness of the case. Alternatively, calf leather with vegetable tanning develops personalised patina over time, whilst silk NATO fabric is perfect for professional contexts. Choice depends on usage and personal colour preferences.

How do I change the strap on the Longines Présence L4.321.4.75.6?

Use a springbar tool to compress the small elastic pins holding the strap in place. Position the tool in the two horizontal grooves beneath the case, press inward to release the pins, then remove the old strap. Insert the new one by sliding one end first, then the other, until the pins lock with a slight click. Work carefully on compact watches like this.

Are aftermarket straps compatible with the Longines Présence L4.321.4.75.6?

Yes, any strap with certified 13mm lug width is compatible. Always verify technical specifications with the seller. Artisanal Milanese straps with this measurement guarantee construction quality equal to or superior to original Longines straps, with options for customisation in leathers, colours and finishes.

How long does a leather strap last on the Longines Présence L4.321.4.75.6?

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3–5 years with daily use and regular maintenance. The understated aesthetics of the Présence allow rotation between 2–3 straps without colour conflicts, extending the life of each. Protect from extreme moisture and clean periodically with a soft, slightly damp cloth.

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