Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Small Seconds Stainless Steel / Silver / Alligator
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter39 mm
Reference1218420 (aka: Q1218420)
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 896/1
Hours, Minutes, Small Seconds
CaseStainless Steel
Straps for the Master Ultra Thin 1218420 (aka: Q1218420)
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 Ultra Thin 1218420 (aka: Q1218420), seen from the bench
The Jaeger-LeCoultre Master Ultra Thin Q1218420 is a stainless steel dress watch with a 39mm case and manual-winding calibre 896/1 movement displaying hours, minutes, and small seconds at 6 o'clock. The 20mm lug width accommodates standard watch straps, with alligator leather being the technical and aesthetic reference for this model. Its minimal thickness and refined proportions exemplify precision engineering from the Le Sentier Manufacture.
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