Jaeger-lecoultre, Geophysical Observatory series, Model: 8126420, 44mm diameter, PT950 platinum case, automatic mechanical movement, tourbillon and World time function (the dial rotates once a day). The world map dial features a three-dimensional relief of the Eurasian continent at the center, with blue ripples representing the ocean. It replicates the retro globe craftsmanship, offering a unique visual recognition. The 24-hour world time track around the dial, the flying tourbillon, and the patented Gyrolab irregular balance wheel (non-circular openwork balance wheel, reducing air resistance) make the entire dial revolve around the center of the dial once every 24 hours. A complete set of accessories (original warranty card with blank date)..