Stainless steel self-winding tonneau-shaped aviator’s wristwatch water-resistant with screwed case-back winding crown protected by the crown guards 24-hour graduated bidirectional revolving bezel for the AM-PM indication white colour dial with subsidiary seconds at 3 and six horological complications: • Fly-back “retour en vol” 1/8 chronograph (activated by the two round screwed push-pieces) • 30-minute recorder (subsidiary dial at 9 o’clock) • 12-hour recorder (subsidiary dial at 6 o’clock) • Date of the month (aperture at 4:30) • Diurnal (day-time) and nocturnal (night-time) hours with a 24-hour (AM-PM) scale (central hour index) • Two-time zone (same central hour index independently adjustable by the round screwed push-piece at 10 o’clock; bezel graduated for 24 hours).