Combining high-precision chronograph and dependable perpetual calendar requiring no adjustment until year 2100, this exquisite timepiece by A. Lange & Söhne is not only harmoniously attractive, but a practical and reliable watch as well. The round-shaped 41mm case is made of 18K white gold with polished finish and features a transparent back. Inside lies the hand-wound L952.1 caliber beating at 18,000 v.p.h. with 45 jewels and a 36-hour power reserve. The solid silver dial with central hour and minute hands, seconds sub-dial, minute counter hand and chronograph sweep seconds hand also features date in an aperture, as well as day, month and leap year by hands, day/night and Moon phase indicators. The watch is worn on a black alligator leather strap with a tang buckle.