The listing, Wireless Optical Mouse with built-in USB has ended.
Practically new, I used this just a few times.
It takes 2 AAA batteries. It works fine, I just prefer my zip-cord mouse.
Very convenient how it holds the USB plug inside the mouse when not in use, making it great for traveling which I never do.
As with all my auctions, in order to continue offering FREE shipping, I can only ship 2-3X a month. If this is an issue please do not bid, or else arrange to send me $5 to cover shipping and I will send as soon as I receive it.