Longines · Master Collection

Strap for Master Collection 40 Date Stainless Steel - Yellow Gold / Silver / Bracelet

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter40 mm
ReferenceL2.793.5.97.7
FamilyMaster Collection
MovementLongines caliber L888.5 hours, minutes, seconds | date | chronometer
Year2023
CaseYellow Gold, Stainless Steel

Spring bar

Swiss Standard universal spring bars

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

Straps for the Master Collection L2.793.5.97.7

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Master Collection L2.793.5.97.7, seen from the bench

The Longines Master Collection features the automatic L888.5 caliber with chronometer certification and indication of hours, minutes, seconds and date. The case features 21mm lugs for the strap. The movement offers essential functions with certified chronometric precision.

Frequently asked questions

What is the lug width of the Longines Master Collection L2.793.5.97.7?

The lug width (ansa width) of the Longines Master Collection L2.793.5.97.7 is 21mm. This dimension is specific to this 40mm model and requires exactly 21mm compatible straps to ensure perfect fit without lateral movement. Do not use 20mm or 22mm straps, as they will compromise both aesthetics and functionality.

Which strap is recommended for the Longines Master Collection L2.793.5.97.7?

For the Longines Master Collection L2.793.5.97.7, we recommend an alligator strap in natural finishes (black or cognac brown) for formal contexts, or vintage calf leather with vegetable tanning for everyday wear. Those seeking versatility may opt for a quality canvas NATO strap. Your choice should balance classical elegance with contemporary practicality. All materials must feature a compatible 21mm lug width.

How do I change the strap on my Longines Master Collection L2.793.5.97.7?

To change the strap on your Longines Master Collection L2.793.5.97.7, obtain a spring bar tool. Position the watch so the lug pins are visible from the side, insert the flat tip of the tool beneath each pin, apply gentle pressure to compress the internal spring, and withdraw the pin from the case lugs. Repeat for the second pin. Insert your new 21mm strap in the same manner, ensuring the pin is fully seated and the spring clicks into place. This procedure can also be performed by Casati Milano atelier.

Can I use an aftermarket strap on my Longines Master Collection L2.793.5.97.7?

Yes, the Longines Master Collection L2.793.5.97.7 is fully compatible with quality aftermarket straps, provided the lug width is precisely 21mm. Artisanal leather, rubber, or fabric straps from reputable manufacturers often offer superior quality compared to OEM options. Ensure the strap employs premium materials (genuine alligator, vegetable-tanned calf, FKM rubber) and features precise stitching. MilanoStraps offers customisable 21mm straps for this model.

How long does a leather strap last on the Longines Master Collection L2.793.5.97.7?

The lifespan of a leather strap for the Longines Master Collection L2.793.5.97.7 depends on material and usage: a natural alligator strap typically lasts 4-6 years with daily wear; vegetable-tanned calf visibly ages after 3-4 years, developing appealing patina. If worn infrequently (2-3 times weekly), longevity extends by 2-3 additional years. Frequent exposure to humidity, perspiration, and direct sunlight reduces strap lifespan. Artisanal straps constructed from premium leathers maintain elasticity and comfort longer than industrial alternatives.

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