Longines · Master Collection
Strap for Longines Master Collection L2.841.4.18.5
The Master Collection 47.5 Small Seconds Stainless Steel / White-Arabic / Alligator XL takes 25 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
What I'm asked about the Longines Master Collection L2.841.4.18.5
What strap size does the Longines Master Collection L2.841.4.18.5 take?
The Longines Master Collection L2.841.4.18.5 needs 25 mm between the lugs. It's the size I've been fitting on it for years.
Can the strap on the Longines Master Collection L2.841.4.18.5 be changed?
Yes. It has spring bars between the lugs: with the right tool the strap comes off in a minute. If you'd rather not risk a scratch, I do it in the workshop.
Can I put a leather strap on the Longines Master Collection L2.841.4.18.5?
Yes, in 25 mm leather. On a 48 mm dress watch alligator is the natural choice: thin, elegant, what it was born for.
Which strap do you recommend for the Longines Master Collection L2.841.4.18.5?
A thin 25 mm alligator. I don't keep this size ready in the catalogue: I make it to measure. If you'd rather have something built on your wrist, the Casati atelier.
Frequently asked questions
Which strap material is most suitable for the Longines Master Collection L2.841.4.18.5?
Genuine alligator represents the finest choice for this model, as its distinctive scaled texture harmonises perfectly with the brushed surfaces of the case. Alternatively, vegetable-tanned calf leather offers enduring prestige and develops a patina that enriches the watch's character over time. For versatility, Cordura canvas NATO maintains proportions consistent with the 47.50mm diameter.
Is an aftermarket 25mm strap compatible with the Longines Master Collection L2.841.4.18.5?
Yes, provided the aftermarket strap is calibrated exactly at 25 millimetres lug width. Artisanal quality straps made to measure guarantee perfect compatibility and enable aesthetic personalisation (colour, material, buckle, deployante) that the original strap does not permit. Always verify that the manufacturer explicitly declares the 25mm specification.
How long does a quality leather strap last on the Longines Master Collection?
A quality strap with vegetable tanning typically lasts 3-5 years with regular daily use. Genuine alligator can last 7-8 years if properly maintained (avoid prolonged water exposure, protect from direct heat sources, apply leather conditioner every 6-12 months). Longevity depends on environmental factors, frequency of use and preventive care practices.
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
The atelier's website: casatimilano.com
