I've got the Cybord RAT 9. It's a wireless mouse. It's great.
You don't necessarily have to get that route, but it's an awesome mouse.
Comes with a combo USB receiver and charger. The mouse and 2 rechargeable batteries.
I've never had a single problem with the wireless connection for the mouse, and it's very accurate.
Only problem is that the battery only last about 7-8 hours total, but it's very easy to swap the battery out and replace it with a fresh one if your in a rush