2.4ghz Wireless Cordless Optical USB Computer Laptop Notebook Mouse Windows Vista Ready 2.4 Ghz RF Wireless Optical Technology. The unit works from a 30 ft radius in pinpoing accuracy 16 Channel Auto Hopping Anti-jamming Technology with 65K available Ids Hassle Free Plug and Play Installation Long Battery Life 5 Buttons mouse, 2 extra buttons are programmable