Stainless steel, self-winding, tonneau-shaped, traveller’s wristwatch, with round bezel, water-resistant with sapphire-crystal snap-on case-back, silver colour guilloché (engine-turned) dial with centre-seconds and three horological complications:· Half-instantaneous date of the month (aperture at 3 o’clock)· Two-time zone (hour hand independently adjustable by the crown; inner bezel graduated for 24 hours)· World Time (inner bidirectional revolving bezel engraved with the names of 23 major cities of the World).