Three hours.
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The charging time of the page turning pen is generally about 2 hours. At the same time, some page-turning pens can use ordinary batteries. Because the electricity consumption is less, it is generally installed once a battery or charged once a semester. So now most page-turning pens install their own ordinary batteries.
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The use of the page turning pen generally requires the receiver of the page turning pen to be plugged into the USB interface of the computer. Usually the receiver is mounted directly on the page turning pen for easy storage and access.
Under normal circumstances, when the paging pen turns the page to charge, it is a red light, and when you wait for it to turn the yellow light, it is successfully charged, about 20 minutes