Longines · Master Collection

Strap for Master Collection Date 25.5 Stainless Steel - Yellow Gold / Champagne / Bracelet

Takes 13 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width13 mm
Case diameter26 mm
ReferenceL2.128.5.32.7 (aka: L21285327)
FamilyMaster Collection
MovementLongines caliber L595 Hours, Minutes, Seconds | Date
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

The Master Collection L2.128.5.32.7 (aka: L21285327), seen from the bench

The Longines Master Collection L2.128.5.32.7 is a contemporary evolution of Swiss watchmaking tradition dating to 1832. This 25.50mm two-tone case model combines yellow gold and stainless steel with the Longines L595 automatic caliber, featuring 24 jewels and a 42-hour power reserve. The date window at 3 o'clock and anti-reflective sapphire crystal complete the essential design; 30m water resistance positions it for formal wear. The 13mm lug width is standard for this diameter.

Frequently asked questions

What is the lug width of the Longines Master Collection L2.128.5.32.7?

The Longines Master Collection L2.128.5.32.7 features a lug width of 13mm. This measurement is essential for purchasing compatible aftermarket straps. It is measured from the inner point of one lug to the other, passing over the dial at the centre of the two attachment seats.

Which strap is most suitable for the Longines Master Collection L2.128.5.32.7?

Given its elegant profile and two-tone gold/steel case, an alligator strap in cognac or dark brown is recommended, or vegetable-tanned calf leather in black for absolute formality. Shell cordovan represents a distinctive choice for those appreciating pronounced patina development over time. The 13mm lug width is critical: ensure you select straps specifically for this measurement.

How do you change the strap on a Longines Master Collection L2.128.5.32.7?

Strap replacement requires a springbar tool. Position the watch with the lugs facing upward, insert the small end of the tool into the groove beside the lug, apply gentle pressure to compress the internal spring, then remove the lug. Repeat on the other lug. Insert the new lugs by reversing the procedure, ensuring the spring hook is fully seated in the groove.

Can I use aftermarket straps on a Longines Master Collection L2.128.5.32.7?

Yes, provided the strap is specific to the 13mm lug width. Artisanal aftermarket straps of quality often surpass OEM options in leather quality, craftsmanship, and customisation. Always verify dimensions: 13mm is the only compatible size for this model. Specialist suppliers such as Milano Straps offer customisable straps with leather, colour, and buckle options.

How long does a leather strap last on this watch?

A quality leather strap with vegetable tannage and noble leather (alligator, calf, shell cordovan) typically lasts 3–5 years under regular daily wear. Longevity depends on factors such as perspiration exposure, moisture, maintenance, and usage intensity. Proper drying after water contact and periodic dusting significantly extend lifespan. Exceptional-quality artisanal leathers, such as those used by Casati Milano, develop a protective patina that improves appearance over time.

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