Jaeger-LeCoultre · Master Ultra Thin
Strap for Master Ultra Thin Réserve de Marche Stainless Steel / Blue / 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
Reference1378480 (aka: Q1378480)
FamilyMaster Ultra Thin
MovementJaeger-LeCoultre caliber 938/1 hours, minutes, small seconds | date | power reserve indicator
Year2017
CaseStainless Steel
Straps for the Master Ultra Thin 1378480 (aka: Q1378480)
Selected for the 20 mm lug width · workshop selection
Black Rubberized Alligator Strap with Red Tribal Stitching€185
Matte Dark Gray Alligator Strap€195
Matte Black Alligator Strap — Minimal Stitching€149
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered calfskin strap in cuoio€98
The Master Ultra Thin 1378480 (aka: Q1378480), seen from the bench
The Master Ultra Thin represents Jaeger-LeCoultre's line of slim watches, characterized by a reduced profile. It is powered by the automatic caliber 938/1, with indications of hours, minutes, small seconds, date and power reserve. The construction prioritizes a contained thickness while maintaining the essential functions of a wristwatch.
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