features: - convenient "Magic Roller"(U.S. Patent No. 5,530,455) - enhanced precision with optical ...

Optical (800dpi), three buttons + scrolling wheel, for left- and righthanded use Features: Enhanced precisio ...

PS/2 No USB Yes Win Vista/2003/XP/XP X64/Me/2000/98 Yes Mac OS Yes Number of Buttons 7 Scroll Wheel Yes ...