35-jewel Cal. OPXIII self winding movement with shock resistant suspension to monometallic balance, circular black dial with luminous baton numerals and arabic noon and six o’clock, polished hands with luminous fill, date aperture at 3 o’clock, subsidiary seconds at 9 o’clock, rotating 24-hour ring with separate screw down crown at 2 o’clock, within a cushion form case with glazed screw down back, circular bezel, wire lugs, maker’s leather strap and steel deployant clasp, with fitted wooden box, outer packaging, instruction booklet and associated guarantee card and chronometer certificate, case, dial and movement signed. 42mm