2.4 ghz wireless optical tilt wheel mouse black
optical 2.4 ghz wireless tilt-wheel mouse model mpt3300blk . features optical sensing technology 2.4 ghz wireless connectivity tilt-wheel scrolling automatic wireless synchronization magnetic stowable nano receiver scalable dpi and low battery indicator . package contents optical 2.4 ghz wireless tilt-wheel mouse nano receiver and . it has 2 aaa batteries software cd for tilt-wheel function user s manual and warranty information . system requirements pc and mac compatibles windows xp vista and 7 mac os 10.3 and above tilt-wheel function is compatible for pc only . an available usb port