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Master Ultra Thin Réserve de Marche – Men’s Watch – Q1378420


Jaeger-LeCoultre Master Ultra Thin Réserve de Marche (Q1378420) men’s watch features stainless steel 39mm case surrounding a silvered dial on a black Alligator strap with a folding clasp.  Jaeger-LeCoultre manufactured automatic Caliber 938 functions include hours, minutes, sub seconds hand, date display & power reserve indicator. This watch features a 43 hour power reserve and is water resistant to 5 bar.
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Financing Options

Marshall Pierce & Company offers a Twelve (12) Month Deferred Interest Financing program through Citi Jeweler's Reserve. To apply, please visit Marshall Pierce & Company or fill out an application.*

*Two (2) valid forms of identification required to apply in-store.

Extended Warranty

Marshall Pierce now offers a three (3) year extended warranty on all purchases through Jeweler's Mutual. The cost of the warranty depends on the price of the item. Please contact us for more details.

Product Details

SeriesMaster Control
MovementAutomatic Calibre 938
Number of Parts273
Frequency28,800 Vph
Power Reserve43 Hours
Case MaterialStainless Steel
Case Dimensions39.00 x 9.90 mm
Case BackSapphire Crystal
DialSilvered Sunray-Brushed
Strap and BuckleAlligator Strap with Double Folding Clasp
Water Resistance5 Bar
WarrantyTwo-Year Manufacturer's Warranty
FunctionsHours, Minutes, Subsidiary Seconds Hand, Power Reserve Indicator, Date Display
About the Brand


In the heart of the Vallée de Joux, in the Swiss Jura Mountains, the Manufacturer Jaeger‑LeCoultre has continuously renewed its creativity and inventiveness since 1833. One hundred and eighty different expert skills are brought together under one roof, to breathe life into the heart of the watches and to animate each infinitely small component. Its iconic collections, form the foundation for the Manufacturer's pride and the satisfaction of their loyal clients.