Features: *Ergonomic design, super mini size *Rectractable cable *High resolution optical sensor performances very well on most of the surfaces *Compatible with Window 9x/Me/NT/2000/XP/2003 System requirement: *IBM PC Pentium 400 compatible or higher *Windows XP/Me/2000/98/95/NT, MS-DOS ETO mini optical mouse is the perfect companion for any notebook user and small hand: compact, comfortable that saves your room and goes wherever you go.