description:...it feels great in either hand and is easy to use. By improving on both its shape and its performance, Traveler 100V fits your needs and taste perfectly, featuring a high precision optical sensor and a quick and precise scrolling lets you browse documents or websites more efficientlyfeatures:- enhanced precision with optical engine, 800dpi- suitable for either hand- port: USB + PS/2system requirements:- IBM PC Pentium 233 compatible or higher- Windows Vista/XP X64/XP/ME/2003/2000/98SE; Mac OS X or later- available USB- or PS/2- portpackage content:- mouse Traveler 100V- quick quide- USB- to PS/2- adapterspecifications:- interface support USB & PS2- number of buttons: 3 buttons- resolution: 800 dpi optical enginesystem support:- Windows Vista/XP X64/XP/ME/2003/2000/98SE- Mac OS X or later- dimension: 116x62x37 mm- giftbox size: 188x140x55 mm- body weight: 105g