Cal. OP IX nickel-finished lever movement 21 jewels Glucydur balance the black matte dial with luminous Arabic and baton numerals luminous hands subsidiary seconds fan-form power reserve indication magnified aperture for date in distintive cushion-shaped water-resistant-type case with sloping bezel and downturned lugs trademark crown protecting bridge with lever lock screw back together with a stainless steel Panerai double deployant clasp case dial and movement signed.