Technical Archive
Jaeger-LeCoultre
Jaeger-LeCoultre
Master Ultra Thin Q1378421 (aka: 1378421)— lug 21mm
Cinturino per Jaeger-LeCoultre Master Ultra Thin Q1378421 ansa 21mm. Alligatore, vitello, NATO. Consulenza Casati Milano su appuntamento.
Artisanal Note
"This model requires a precise 21mm lug width to preserve the original sartorial balance."
Technical Specifications
Jaeger-LeCoultre Q1378421 (aka: 1378421)
Lug Width
21
mm
The essential strap measurement.
Browse 21mm straps →
Reference
Q1378421 (aka: 1378421)
Movement
Jaeger-LeCoultre caliber 938 Hours, Minutes, Small Seconds | Date | Power Reserve Indicator
The Heritage
The Master Ultra Thin uses the Jaeger-LeCoultre 938 caliber with indication of hours, minutes, small seconds, date and power reserve. The watch features 21mm lugs and maintains a slim profile characteristic of the Master Ultra Thin collection. The movement offers essential functions with the practical addition of the power reserve indicator.
Compatible Straps
Selected for 21mm lug width
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 →By appointment only · Milan