Technical Archive

Longines
Master Collection L2.128.5.87.7— lug 13mm

Longines Master Collection L2.128.5.87.7: 13mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Master Collection Date 25.5 Stainless Steel - Pink Gold / MOP / Bracelet

Artisanal Note

"This model requires a precise 13mm lug width to preserve the original sartorial balance."

Lug Width

13 mm

The essential strap measurement.

Browse 13mm straps →

Reference

L2.128.5.87.7

Movement

Longines caliber L592.2 Hours, Minutes, Seconds | Date | Chronometer

The Heritage

The Longines Master Collection features the L592.2 caliber with hour, minute, second and date functions, certified as a chronometer. The case has 13mm lugs for strap attachment. The movement ensures the chronometric precision required for this timepiece from the Swiss brand's main collection.

FAQ

What is the lug width of the Longines Master Collection L2.128.5.87.7?

The lug width of the Longines Master Collection L2.128.5.87.7 is 13mm. This measurement represents the distance between the two lugs (side attachments) of the case and is essential to ensure the strap fits perfectly without lateral play. To verify it, measure the internal distance between the lugs using a digital calliper.

Which strap material is most recommended for this model?

Alligator represents the most elegant and traditional choice for the L2.128.5.87.7. The natural scale texture and the patina that evolves over time enhance the mother-of-pearl dial and the understated elegance of the two-tone case. Shell cordovan is an excellent alternative for those seeking practicality without aesthetic compromise.

How do you change the strap on a Longines Master Collection watch?

The strap is changed by removing the spring bars connecting the strap to the case lugs. Use a dedicated tool (spring bar remover) or a thin blade to gently push inward and release the ends. Once the spring bars are freed, slide off the old strap and insert the new one, ensuring the spring bars click securely into their seats.

Which aftermarket strap is compatible with the L2.128.5.87.7?

Any strap with a 13mm lug width is perfectly compatible with the L2.128.5.87.7. Ensure the strap has been specifically manufactured for this measurement and that the leather quality is appropriate to the watch's luxury profile. Customisable artisanal straps offer superior versatility and durability compared to industrial alternatives.

How long does a leather strap last on a Longines watch?

A quality leather strap (alligator, calf, cordovan) typically lasts 3-5 years with regular daily use, depending on exposure to moisture, temperature fluctuations and intensity of use. Vegetable tanning extends durability due to greater fibre density. Proper maintenance—drying after perspiration, avoiding prolonged rain—can significantly extend the strap's lifespan.