The most complicated A. Lange & Söhne wristwatch
The grand and small strikes indicate the time in quarter-hour intervals. The minute repeater is triggered by actuating the slider at 8 o’clock. The striking mechanism has its own spring barrel; it provides enough power for 24 hours. Small gold hands grace the calendar displays and indicate date, day of the week, month and leap year. The small blued hands and the slender pair of sweep-seconds hands are assigned to the rattrapante-chronograph function. The energy consumption of the flying seconds is so high that a separate spring barrel is needed to deliver it.