Logitech Red Dragon Couch Mouse w/ Long Battery Life & Unifying Receiver

Portable wireless 3-button mouse
Advanced 2.4 GHz wireless
Tilting scroll wheel
Leave-in tiny USB receiver
Sealed bottom
Hand detection
Easy-glide base
2 x AA Batteries provide long battery life
Windows requirements: Windows XP or later, USB port
Mac requirements: OS X 10.5 or later, USB port