Eco-Drive Infinitum watches run for approximately 5 years once fully charged (Ladies model 2 years), and feature a Perpetual Calendar accurate to February 2100.
When this watch has not been exposed to light for a certain length of time, the functions begin to shut down. This saves power and extends operating time.
In the mean time, the Movement's integrated circuit keeps track of the current time and date. When the watch is once more exposed to light, the Hands and date immediately resume their correct positions.
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