Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Moon 36 Pink Gold - Diamond / Silver / Alligator
Takes 17 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Master Ultra Thin Q1242502, seen from the bench
Frequently asked questions
What is the lug width of the Jaeger-LeCoultre Master Ultra Thin Q1242502?
The lug width of the Q1242502 measures 17 millimetres. This dimension represents the distance between the two internal lugs securing the strap to the case. To verify with precision, use a digital calliper and measure the space between the lugs: any replacement strap must comply rigorously with this specification.
Which strap should I choose for the Jaeger-LeCoultre Master Ultra Thin Q1242502?
For the Q1242502 in pink gold, dark brown alligator (cognac tone) or polished black alligator represents the most coherent stylistic choice. Alternatively, vegetable-tanned calf leather develops a patina that ages gracefully, whilst shell cordovan provides structural rigidity and lustre that dialogue with the case finishing. Avoid warm reddish tones: they would conflict chromatically with the pink gold.
How do I change the strap on the Jaeger-LeCoultre Master Ultra Thin Q1242502?
The operation requires a spring bar tool: insert the flat tip into the slot beneath the lug, apply gentle upward pressure and the internal spring will compress, releasing from its seat. Remove the old strap, position the new one aligning the holes with the lug, then release the tool. The spring will reposition automatically into the new strap's housing. Fluid movements, never force.
Is an aftermarket strap compatible with the Jaeger-LeCoultre Master Ultra Thin Q1242502?
Yes, any strap with a 17-millimetre lug width is compatible. Verify that the width corresponds exactly (measurement with calliper strongly recommended). Premium artisanal straps in alligator, calf leather, shell cordovan and vegetable-tanned leather fit perfectly and offer personalisation impossible with standard equipment straps.
How long does a leather strap last on a Jaeger-LeCoultre like the Q1242502?
Durability depends on leather quality, frequency of wear and climate conditions. A vegetable-tanned leather strap, well maintained, resists 18–36 months before requiring replacement. Premium alligator, thanks to its inherent robustness, exceeds 3–4 years. Shell cordovan, for its structural density, can reach 5 years. Casati Milano guarantee: 18 months against manufacturing defects and construction defects.
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
