Platinum self-winding round-shaped gentleman’s wristwatch waterresistant with sapphire-crystal snap-on case-back patented system of correctors under the lugs Havana-brown colour dial perpetual calendar date of the month day of the week month of the year age and phases of the moon four-year cycle of leap-years diurnal (day-time) and nocturnal (night-time) hours with a 24-hour (AM-PM) scale two-time zone.