Stainless steel, self-winding, vertical tonneau-shaped, aviator’s wristwatch, water-resistant with screwed case-back, 12-hour graduated unidirectional revolving bezel, wind rose and solar compass inner bezel, dark grey colour dial with subsidiary seconds at 9 and six horological complications:
• Chronograph (activated by the two round-shaped push-pieces)
• Half-instantaneous 30-minute counter (subsidiary dial at 12 o’clock)
• 12-hour counter (subsidiary dial at 6 o’clock) • Half-instantaneous date of the month (aperture at 3 o’clock)
• 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 crown; bezel graduated for 24 hours).