keyboard(2.4ghz wireless multimedia keyboard with trackball)

Features

346*173*27mm Mini Size
RF Wireless 2.4GHz Keyboard
Up to 10 Meters Interruption-free Receiving Distance
Build-in Optical Trackball for Easy Control of Mouse Function
Perfectly match with Media Center PC, Home Theater PC, Internet TV, and Car PC
Stylish Piano Finish Design
Build-in Storage Compartment for USB Receiver

System Requirements
 IBM or Compatible PC System
 Win Me/2000/XP/Vista/7