Longines · Presence

Strap for Presence 34.5 Automatic Gold

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
ReferenceL4.778.6.12.2 (aka: L47786122)
FamilyPresence
MovementLongines caliber L619.2 Hours, Minutes, Seconds | Date
CaseYellow Gold

Spring bar

Swiss Standard universal spring bars

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

The Presence L4.778.6.12.2 (aka: L47786122), seen from the bench

The Longines Presence reference L4.778.6.12.2 is powered by the L619.2 caliber with hour, minute, second and date indication. The watch features 18mm lugs for the strap. The movement offers essential functions in a classic configuration of the Swiss brand.

Frequently asked questions

What is the lug width of the Longines Presence L4.778.6.12.2?

The lug width (misura ansa) of the Longines Presence L4.778.6.12.2 is 18mm. This measurement refers to the internal space between the two lugs of the case where the strap attaches. Accurate measurement is essential to ensure correct strap compatibility and proper fit.

What type of strap is best suited for the yellow gold Longines Presence?

For the yellow gold Presence, an alligator strap in dark brown or cognac is ideal, alternatively an elegant calf leather. Shell cordovan with vegetable tanning is a premium option as it develops a patina that harmonises naturally with the gold. Avoid sports materials such as rubber or NATO straps, which create aesthetic dissonance with the case's refinement.

How do you change the strap on the Longines L4.778.6.12.2?

The strap is changed by extracting the spring bar (the thin metal rod) that sits in the space between the case lug and the strap. Use a dedicated spring bar tool or fine tweezers. Lift the bar gently until it disengages from the lug holes, remove the old strap, insert the bar through the new strap, and reinsert it into the case lugs until it clicks securely into place.

Can I use an aftermarket strap on an original Longines watch?

Yes, any high-quality artisanal strap with 18mm lug width is compatible. However, it is advisable to select a strap of excellent craftsmanship to avoid diminishing the watch's noble character. Artisanal straps in fine leather, with refined finishing and Italian craftsmanship, guarantee perfect compatibility and longevity.

How long does a leather strap last before requiring replacement?

Durability depends on leather quality, usage frequency and maintenance. A high-quality artisanal alligator or shell cordovan strap typically lasts 3-5 years with daily wear. Calf leather may require replacement more frequently. Vegetable-tanned leather ages gracefully and develops character. To extend lifespan, avoid prolonged water exposure and periodically apply a specific leather conditioner.

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