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Power Reserve Indicator
Big Date
Day Date
Tourbillon
The power reserve indicator tells you the time the watch will continue to function. It can either be seen on hand winding or automatic watches.
Watches featuring a « big date » display an oversized window and have two independent date discs.
A day date watch displays the days of the week (from monday to sunday) and the date (between 1 and 31).
The tourbillon system was made to compensate the Earth’s gravitational force by mounting the escapement in a revolving cage. It gives the watch a better accuracy. This complication is known as one of the most difficult to make.
