Jaeger-LeCoultre Master Ultra Thin Power Reserve

The Jaeger-LeCoultre Master Ultra Thin Power Reserve, reference Q1378421, carries a silvered dial within a 39 mm steel case measuring 8.95 mm thick. The case has curved lugs, a 21 mm lug width and a 50-metre water-resistance rating. Rhodium-plated hour-markers, an applied logo and dotted minute track share the sunray-brushed dial with opaline counters, a date and power reserve display. Self-winding calibre 938 contains 262 components, 39 jewels and one barrel, with a silicon escapement. The calibre operates at 4 Hz and provides a 70-hour power reserve. A double folding clasp closes the black alligator leather strap with quick-release technology.