How much, according to the time of use, will the batteries last! I can't say anything yet. But I think that on the example of other wireless devices, for quite a long time! It all depends on the personal attitude to things, habits and rules of use! For example, I always turn off the power on the keyboard and mouse after finishing the work day and at home for the night! Apparently it helps a lot because my Logitech Marathon Mouse M705 Black USB wireless mouse has served me without changing batteries for over 5 years!.
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