Features:
ergonomic fish design, comfortable hand touch
Scroll up and down directly without moving your hand
Accurate definition is 800DPI and sensitive operation
Switch vertical to horizontal wheel
USB bi-purpose functions for all computers
Hot direct Plug and Play, no need power!!
Specially designed to fit your Notebook computer
Come with USB retractable cable and USB converter connector for easy use
Compact size is ideal for carrying with notebook
Works with OS Windows 95/98ME/NT/2000/XP