Swiss made, manually wound, 33.50 mm x 4.20 mm, 21 jewels, 135 components, 100-hour power reserve, 3.5Hz (25,200 vph). Hours, minutes, center seconds. Free sprung balance wheel. Unique stop-work declutch mechanism. Finishing includes Geneva stripes, straight graining, circular graining, perlage, frosting, beveled and polished edges, polished countersinks and screw heads. Motor barrel transmission.