Longines · DolceVita

Strap for DolceVita 20 Quartz Stainless Steel Black Roman

Takes 15 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width15 mm
Case diameter20 mm
ReferenceL5.155.4.79.6 (aka: L51554796)
FamilyDolceVita
MovementLongines caliber L178 Hours, Minutes, Small Seconds
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

The DolceVita L5.155.4.79.6 (aka: L51554796), seen from the bench

The Longines DolceVita L5.155.4.79.6 is a refined contemporary interpretation of Art Deco design. It features a 19.80mm rectangular stainless steel case housing a quartz L178 Longines caliber. The 15mm lug width requires careful strap selection to maintain the watch's formal harmony and proportions.

Frequently asked questions

What is the lug width of the Longines DolceVita L5.155.4.79.6?

The lug width of the Longines DolceVita L5.155.4.79.6 is precisely 15mm. This measurement represents the distance between the two lugs on the case where the strap attaches. To verify, observe the small holes or slots on the case side: their centres are exactly 15mm apart.

What is the best strap material for the Longines DolceVita L5.155.4.79.6?

Alligator remains the most prestigious choice for this Art Déco model: the natural grain of the leather mirrors the rectangular geometry of the case. Vegetable-tanned calf leather offers versatility and develops a beautiful aged patina. A NATO strap in cotton or silk permits a more contemporary and informal approach. Your choice depends on personal preference and intended use.

How do you change the strap on the Longines DolceVita L5.155.4.79.6?

Strap replacement requires a spring bar tool to compress the small metal springs (spring bars) fitted within the case lugs. Insert the flat end of the tool into the gap between case and strap, gently compress the spring, remove the old strap, align the new strap's holes with the spring bar pins, and release. If inexperienced, consult a service centre.

Is an aftermarket strap compatible with the Longines DolceVita L5.155.4.79.6?

Yes, any strap with a 15mm lug width is compatible with the DolceVita L5.155.4.79.6. Artisanal straps from Casati Milano and models from Milano Straps are available in this specific width, ensuring perfect fit without unwanted gaps or movement.

How long does a leather strap last on a Longines DolceVita watch?

A high-quality leather strap (alligator or vegetable-tanned calf) typically lasts 3–5 years with regular wear, depending on humidity, sun exposure, and usage frequency. Wear accelerates if exposed to frequent water or perspiration. Casati Milano artisanal straps carry an 18-month warranty; replacement is recommended when leather begins to crack or stitching fails.

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