Swiss made, automatic, 26.6 mm/4.26 mm, 21,600 vph (3Hz), 60-hour power reserve. Kif shock absorption, Gyromax variable inertia (free sprung) balance. Circular graining, Geneva stripes, Nivarox 1 balance spring, uncut hoop, 60-hour power reserve. Bidirectional winding. Dubois Dépraz chronograph module.