2.4 ghz wireless optical nano mouse red
optical wireless nano mouse model mp2700red . features optical sensing technology built-in scroll wheel automatic wireless synchronization 2.4 ghz wireless nano receiver and adjustable height design . package contents optical wireless nano mouse nano receiver user s manual and warranty information system requirements pc amp mac compatibles windows 2000 xp and vista mac os 10.3 and above . an available usb port . it has 2 aa batteries