Manual-winding mechanical movement with 8 days of power reserve. Polished steel rectangular rotating case 39,5 x 29.0 mm. Silvered engine-turned dial with Arabic numerals. Steel blued hands. Subsidiary seconds dial between 3 and 6 o'clock. The case flips over to reveal a round-shaped window displaying the remaining days of power reserve. Brown leather strap with original Jaeger-LeCoultre steel deployment clasp.