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 width
The Master Collection L2.128.5.32.7 (aka: L21285327), seen from the bench
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
