Yes, 2 AAA batteries. And if you get it, it comes with the USB plug-in. It plugs into a USB on your computer. If you want me to, I will furnish the 2 AAA batteries. When you get it ready, you have to wake it up by starting to use it.
Sammie, I will put batteries in it for you. Then when you get it plug the USB jack into your computer. Then you have to wake the mouse up just by clicking it. There will be fresh batteries.