Jaeger-LeCoultre · Master Control
Strap for Master Control Geographic Pink Gold / Silver / Alligator
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Master Control Q4122520 (aka: 4122520)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€210
Black Alligator Strap with White Edges€210
Millenium Cognac Alligator Strap€270
Matte Blue Alligator Strap€270
Green Rubberized Alligator Strap with Ecru Tribal Stitching€185
The Master Control Q4122520 (aka: 4122520), seen from the bench
Frequently asked questions
What is the lug width of the Jaeger-LeCoultre Master Control Q4122520?
The lug width is 20 millimetres. This measurement is standard for watches with case diameters between 38 and 42 millimetres and ensures harmonious proportions between case and strap. To verify, remove the current strap and measure the distance between the two spring bars protruding from the case lugs.
What type of strap do you recommend for the Master Control Q4122520?
For a rose gold watch of this calibre, we recommend natural leather with vegetable tanning: alligator if budget permits (develops patina over time), or premium calf leather (uniform grain, timeless elegance). Shell cordovan offers rigidity and brilliance but requires constant maintenance. Avoid rubber or silicone: they betray the essence of the timepiece.
How do I change the strap on the Master Control Q4122520?
Use a spring bar tool to gently compress the internal elastic pin and extract it from its seat. The process takes approximately 30 seconds per lug. Position the new strap by inserting one pin into the upper seat first, then apply gentle pressure to seat the second pin. Never force it: the pin should slide smoothly.
Can I use an aftermarket strap compatible with the Q4122520?
Yes, any strap with 20 millimetre lug width is compatible with the Master Control Q4122520. However, we recommend selecting specialised brands that respect the watch's aesthetics: quality leather, precise stitching, noble metal hardware (rose gold, stainless steel, titanium). A mediocre strap diminishes an extraordinary timepiece.
What is the average lifespan of a leather strap for this watch?
A natural leather strap lasts between 2 and 4 years with daily use and regular maintenance. Vegetable-tanned leather extends to 5–7 years if properly cared for (monthly cleaning with damp cloth, annual conditioning with neutral wax). Premium alligator can reach 8 years. Humidity, perspiration, and sunlight exposure accelerate wear.
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
