A. LANGE & SÖHNE GRAND COMPLICATION

One of the most functional or “complication”-packed mechanical watches made, this model has a monopusher chronograph, rattrapante and jumping seconds, moon disc and perpetual calendar. It needs correction only on one day in 2100, so be sure to remember. It also has what watchmakers consider one of the toughest functions to devise: the “grand sonnerie”, a chiming mechanism sounding on the hour and quarter-hour. The other complication, of course, is the price.