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Longines · Heritage

Strap for BelleArti 25 Quartz Stainless Steel Black

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

Lug width

15mm
15 mm strapsAll Longines
Lug width15 mm
Case diameter25 mm
ReferenceL2.501.4.53.4 (aka: L25014534)
FamilyHeritage
MovementLongines caliber L176 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

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The Heritage L2.501.4.53.4 (aka: L25014534), seen from the bench

The Longines Heritage L2.501.4.53.4 is a women's wristwatch exemplifying early twentieth-century formal purity, featuring a minimalist aesthetic from Saint-Imier's 1930s era. The stainless steel case measures 24.6mm in diameter with a 15mm lug width, housing the manual-wind Longines L176 caliber that displays hours and minutes via applied hands and a subsidiary seconds dial at six o'clock. COSC-certified movement guarantees ±4 seconds per day precision, maintaining historical construction standards without date or additional complications.

Frequently asked questions

What is the lug width of the Longines Heritage L2.501.4.53.4?

The Longines Heritage L2.501.4.53.4 features a lug width of 15mm. This specification is exclusive to the Heritage ladies' models and is essential when selecting a compatible strap. The measurement is verified by inserting an internal calliper between the watch lugs.

Which strap is best suited for the Longines Heritage L2.501.4.53.4?

We recommend a natural alligator strap (honey, chocolate brown or pearl grey tone) or vegetable-tanned calf leather. Both options preserve the minimalist aesthetic of the piece. Choice depends on personal preference: alligator conveys historical purity, calf emphasizes organic patina. Avoid NATO and canvas—too heavy for the ladies' case diameter.

How do I change the strap on the Longines Heritage L2.501.4.53.4?

Strap replacement involves extracting the spring bars (the metal cylinders connecting strap to lugs). A specialised spring bar removal tool and moderate dexterity are required. We recommend professional assistance to prevent case damage. Milano Straps provides tool kits and photographic guides; Casati Milano performs changes by appointment in-atelier.

Is an aftermarket strap compatible with the Longines Heritage L2.501.4.53.4?

Yes, provided the lug width is precisely 15mm. Artisanal bespoke straps guarantee superior mechanical and aesthetic compatibility versus generic solutions. Milano Straps offers 15mm straps with personalisation options; Casati Milano creates made-to-measure designs with 18-month warranty.

What is the lifespan of a leather strap for the Longines Heritage L2.501.4.53.4?

A leather strap (alligator or vegetable-tanned calf) with daily wear typically lasts 3–5 years before replacement. Longevity depends on humidity exposure, direct sunlight and frequency of use. Natural patina emerges after 6–12 months, a sign of conscious ageing. Casati Milano provides 18-month warranty on all bespoke straps, covering 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