Longines · Master Collection
Strap for Master Collection Date 29 Two Tone Pink
Takes 15 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Master Collection L2.257.5.79.7 (aka: L22575797), seen from the bench
Frequently asked questions
What is the lug width of the Longines Master Collection L2.257.5.79.7?
The lug width of the Longines Master Collection L2.257.5.79.7 is 15mm. This measurement represents the distance between the two lugs (pins) that hold the strap in place. To verify, measure perpendicularly between the pins using a digital calliper or precision ruler. Confirming this measurement is essential before ordering a replacement strap, as a 1mm variation renders the strap completely incompatible.
Which strap material best suits the Longines Master Collection L2.257.5.79.7?
For this bicolour pink gold and stainless steel Master Collection, alligator leather in brown or vegetable-tanned calf represent the most coherent choices. Alligator offers fine, uniform grain that naturally complements the pink gold, whilst calf leather allows the patina to evolve over time. Burgundy shell cordovan serves as a sophisticated alternative, developing rich tones after months of wear. Rubber or NATO straps would contradict the dress-watch identity of the model.
How do you change the strap on the Longines Master Collection L2.257.5.79.7?
Strap replacement involves extracting the spring bars that pass through the lugs of the case. Use a dedicated tool (spring bar tool or watchmaker's hammer) to apply controlled pressure, avoiding damage to the case. Insert the new strap by aligning the lugs precisely with the pins, then tighten gradually. If inexperienced, consult a specialist watchmaker: the service is quick (15 minutes) and preserves case integrity.
Are compatible aftermarket straps available for the Longines L2.257.5.79.7?
Yes, several quality manufacturers offer 15mm aftermarket straps specifically designed for small-to-medium cases like the Master Collection. Milano Straps offers a dedicated collection of alligator, calf, and shell cordovan straps, all customisable in colour, length, and thread colour. These straps maintain construction standards comparable to original Longines straps, featuring artisanal finishing and extended warranties.
What is the typical lifespan of a leather strap for the Longines Master Collection L2.257.5.79.7?
A quality leather strap, subjected to moderate use (4-5 days weekly), typically lasts 3-5 years before significant deterioration occurs. Longevity depends on leather type (alligator ages better than generic calf), tanning method (vegetable tanning is more resilient), and wearing conditions (consistent exposure to perspiration and humidity accelerates wear). Regular maintenance with specialist balms considerably extends strap lifespan.
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
