... Design, High Accuracy Wireless Portable Optical Mouse USB Receiver RF 2.4GHzFeatures:* 2.4GHz wireless transmission up to 10 meters operating distance.* Built-In ... : 2402-2480MHz* RF operation channel: 16, auto frequency hopping* USB: USB 2.0* Operation systems: Windows 2000, Me, XP, Vista, Win 7 ... for PC1 * USB receiver Wireless Portable Optical Mouse USB Receiver RF 2.4GHz