Vacheron Constantin Twin Beat Perpetual Calendar
A dual-frequency timepiece with staying power
Vacheron Constantin’s Traditionnelle Twin Beat Perpetual Calendar beats at a high frequency, displaying the hours, minutes, date, month, leap year cycle and power reserve on its dial. When the watch is not being worn, its in-house developed calibre can be slowed down via a pusher at 8 o’ clock in order to guarantee an extended power reserve of at least 65 days. Additionally, the all-or-nothing construction ensures that the switch is instantaneous, with no lag when transitioning from one mode to the other. Vacheron Constantin has achieved this with two balances, each operating at a different frequency that has never been seen before – it is a true ‘first’ in watchmaking.