Compatible with use on two different PCs. The button on the mouse allows you to select between the two different connection methods, one of which is Bluetooth and the other of which is a USB adapter. The mouse has a switch that can only be activated by hand, but it also has an automatic off mode. I have been working on these batteries for a few weeks now, and I have put used batteries in them. I have read in the reviews that it consumes batteries very quickly, but I have not noticed this firsthand.
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