Longines · La Grande Classique

Strap for Longines La Grande Classique L4.705.2.32.7

The La Grande Classique Tonneau 30 Yellow takes 18 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

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Lug width18 mm
Case diameter30 mm
ReferenceL4.705.2.32.7 (aka: L47052327)
FamilyLa Grande Classique
MovementLongines caliber L209 Hours, Minutes
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

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

What I'm asked about the Longines La Grande Classique L4.705.2.32.7

What strap size does the Longines La Grande Classique L4.705.2.32.7 take?

The Longines La Grande Classique L4.705.2.32.7 needs 18 mm between the lugs, usually 16 mm at the buckle. It's the size I've been fitting on it for years.

Can the strap on the Longines La Grande Classique L4.705.2.32.7 be changed?

Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.

Can I put a leather strap on the Longines La Grande Classique L4.705.2.32.7?

Yes, in 18 mm leather. On a 30 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.

Which strap do you recommend for the Longines La Grande Classique L4.705.2.32.7?

A thin 18 mm alligator. You'll find it ready in the 18 mm collection. If you'd rather have something built on your wrist, the Casati atelier.

Straps for the La Grande Classique L4.705.2.32.7

Selected for the 18 mm lug width

All 18 mm straps →

The La Grande Classique L4.705.2.32.7, seen from the bench

The La Grande Classique line represents Longines' dress watch collection, characterized by essential lines and a slim profile. The model is powered by the L209 quartz caliber with hour and minute indication. The case features 18mm lugs for the strap.

Frequently asked questions

Which strap material is best suited to the Longines La Grande Classique L4.705.2.32.7?

For the Longines La Grande Classique L4.705.2.32.7, alligator leather represents the ideal aesthetic and tactile standard: fine natural grain, patina deepening over time, texture integrating the case's sobriety. Alternatively, vegetable-tanned calf leather offers rustic character and develops patina rapidly; shell cordovan represents the pinnacle of density and durability; Nubuck calf adds satinous softness for a contemporary approach. For formal evening wear, black alligator is the definitive choice.

Is an 18mm aftermarket strap compatible with the Longines La Grande Classique L4.705.2.32.7?

Yes, any aftermarket strap of 18 mm width is compatible with the Longines La Grande Classique L4.705.2.32.7 provided the spring bars have the standard 1.5 mm diameter. Always verify bar diameter before purchase. At milanostraps.it you will find a dedicated selection of 18mm straps in alligator, calf, shell cordovan and rubber, all tested for compatibility and customizable in length and detailing.

How long does a leather strap last on the Longines La Grande Classique L4.705.2.32.7?

Longevity depends on material and daily use. Quality alligator lasts 5–8 years with everyday wear, developing appealing patina. Vegetable-tanned calf ages visibly in 3–5 years, often preferentially by purists. Shell cordovan is most durable: 10–15 years are common. Regular maintenance—avoiding stagnant water, applying vegetable conditioners—significantly extends lifespan. The Casati Milano atelier offers an 18-month warranty on every custom strap and provides repairs and reconditioning services throughout its life.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only

The atelier's website: casatimilano.com