Automatic winding mechanical Movement Calibre 1137, antimagnetic, 37 jewels, 21600 vibrations per hour, gold rotor. Functions: hours, minutes, small seconds sub-dial at 6, grand-date at 12, chronograph with 30-minute and 12-hour counters. Steel case polish and satin finish, 40 mm diameter. Steel bezel worked like a Malta cross. Screw-in crown and push buttons. Steel case-back locked by 8 little screws. Marina Militare Italiana's school ship called Amerigo Vespucci engraved on the case back. Black dial with three guillochè counters, Arabic numerals, and hand with luminous inserts. Brushed steel bracelet. Double-covered folding clasp with double push-button for the release.