Jaeger-LeCoultre Master Control Geographic

The Jaeger-LeCoultre Master Control Geographic, reference Q4128421, uses a 40 mm steel case, 10.96 mm thick and rated to 50 metres. Polished rhodium-finish numerals and hour-markers share the silvered sunray-brushed dial with Dauphine and baguette hands. A second time zone is selected on a 24-city disc, alongside a pointer date and power reserve display. Self-winding calibre 939 runs at 28800 vibrations per hour with a 70-hour power reserve. Its assembly incorporates 295 components, 34 jewels and one barrel. A quick-release light-brown calfskin leather strap closes with a double folding clasp, with an additional black alligator leather strap.