The Audemars Piguet Dual Time reference 25685 is a stylish watch that measures 36 mm with a nice slim 18k yellow gold stepped case profile that disappears under any cuff. The clean and crisp white dial displays two time zones, power reserve and calendar. The blued leaf hands are a real pleasure to look at and of course also indicate the time. The automatic caliber 2129 was recently fully serviced and is running perfectly. The watch comes on a blue alligator leather watch strap complete with an 18k yellow gold AP buckle. It was produced in the 1990's.