Longines · Master Collection

Strap for Master Collection 40 Date Yellow Gold / 190 Years

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
ReferenceL2.793.6.73.2
FamilyMaster Collection
MovementLongines caliber L888.5 ND hours, minutes, seconds | chronometer
Year2022
CaseYellow Gold

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 L2.793.6.73.2

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Master Collection L2.793.6.73.2, seen from the bench

The Longines Master Collection is powered by the automatic L888.5 caliber with chronometer certification. The movement provides indication of hours, minutes and seconds. The case features 21mm lugs for the strap.

Frequently asked questions

What is the lug width of the Longines Master Collection L2.793.6.73.2?

The lug width of the Longines Master Collection L2.793.6.73.2 is 21mm. This measurement corresponds to the internal space between the case lugs and determines the compatibility of any aftermarket strap. A strap with 21mm lugs will fit perfectly within the case attachments without lateral movement or friction.

Which strap material is recommended for the Longines Master Collection in yellow gold?

For a Longines Master Collection L2.793.6.73.2 in 18-carat yellow gold, black or cognac alligator is the most stylistically coherent choice. If you prefer a contemporary tonality, light brown vegetable-tanned calf creates an elegant chromatic dialogue with the gold. Natural rubber in black is a valid option for those seeking versatility without aesthetic compromise.

How do you change the strap on a Longines Master Collection L2.793.6.73.2?

Strap replacement requires a simple tool (spring bar tool) and a few seconds of careful handling. Position the watch on a soft surface, insert the tool under the lug with gentle pressure, lift until the lug is freed from the case. Repeat for the opposite lug. Insert the new strap by pushing the lugs through the bars until they engage, verifying that they are locked in all positions.

Is a 21mm aftermarket strap completely compatible with the Longines Master Collection L2.793.6.73.2?

Yes. Any strap with internal lugs of 21mm is compatible with the L2.793.6.73.2. However, it is advisable to verify that the strap thickness does not exceed 3-3.5mm at the lug attachment point, otherwise it may create friction with the case shoulders. Quality artisanal straps respect this standard.

What is the durability of a leather strap for the Longines Master Collection?

A quality artisanal alligator or calf strap has a lifespan of 5-8 years with daily use and appropriate maintenance (drying after moisture exposure, periodic treatment with specific creams). Factors such as climate, frequency of use, and type of tanning influence longevity. Natural rubber straps last 7-10 years. A good practice is to rotate multiple straps to distribute wear.

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