Longines · DolceVita

Strap for DolceVita 20.5 Quartz Stainless Steel / Diamond / Black

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

Lug width15 mm
Case diameter21 mm
ReferenceL5.255.0.57.0 (aka: L52550570)
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 L5.255.0.57.0 (aka: L52550570), seen from the bench

The Longines DolceVita is equipped with the L178 calibre featuring hours, minutes and small seconds indications. The model features 15mm lugs and is characterized by the rectangular design typical of the collection. The reference L5.255.0.57.0 belongs to the brand's dress watch line.

Frequently asked questions

What is the lug width of the Longines DolceVita L5.255.0.57.0?

The Longines DolceVita L5.255.0.57.0 features a 15mm lug width, an undersized dimension compared to standard commercial specifications. To verify the measurement accurately, position the watch on a ruler and measure the internal distance between the lugs at the strap attachment point. This non-standard sizing requires precise selection of aftermarket straps to ensure compatibility and correct aesthetic proportions.

What is the best strap material for the Longines DolceVita L5.255.0.57.0?

Material selection depends on intended use and desired aesthetic. Vegetable-tanned alligator is the most elegant solution to enhance vintage character; shell cordovan offers waxy texture and develops distinctive patina over time; vegetable-tanned calf provides chromatic versatility and initial softness; quality NATO fabric adds formal contrast; Tropic rubber is ideal for summer use. For this polished steel case model, all these materials maintain the watch's aesthetic balance.

How do you change the strap on the Longines DolceVita L5.255.0.57.0?

Strap replacement requires simply removing the original lugs and installing new ones. For a manually-wound watch with thin case like the DolceVita, use a dedicated spring bar tool to prevent damage to the lugs. Carefully insert the tool tip under the elastic pin, lift to free the lug and remove it. Repeat on the opposite side. To install the new strap, reverse the procedure, ensuring the rings are perfectly aligned with the lugs.

Is an aftermarket strap compatible with the Longines DolceVita L5.255.0.57.0?

Yes, but it is essential to verify that the strap is specifically manufactured for the 15mm lug width. Not all aftermarket straps are available in this undersized dimension. Always check manufacturer specifications before purchase. Milano Straps offers a complete selection of 15mm-compatible straps, available in various materials and customisable in sizing, initials and stitching thread choice. For a fully personalised experience, the Casati Milano atelier creates bespoke straps with direct leather selection and 18-month warranty.

What is the average lifespan of a leather strap for the Longines DolceVita L5.255.0.57.0?

A leather strap's longevity depends on material, tanning treatment and intensity of use. Vegetable-tanned alligator typically lasts 5-7 years with daily wear; shell cordovan can reach 8-10 years due to its natural resistance to wear; vegetable-tanned calf has similar durability to cordovan if properly maintained. With adequate care (avoiding prolonged moisture and direct sunlight exposure), these periods can be extended. Milano Straps provides 18-month warranty on straps, whilst Casati Milano offers extended guarantees on bespoke creations.

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