description:...provides quicker cursor movement and accuracy than a regular optical mouse. It also has unique dpi adjustment between 1600 and 800 dpi, to meets high screen resolutions of 1024x768 pixels and 600x800 pixelsWith the wider body design is a great fit in either hand and minimizes any chance of getting a wrist injury from too much movementfeatures:- comfy design with the precision laser technology- 1600 and 800 dpi resolution- adjustable for screen resolution of 1024x768 pixels or 800x600 pixels- wider body design for excellent hand comfort and prevents wrist injuries- suitable for either hand- port: PS/2system requirements:- IBM PC Pentium 233 compatible or higher- Windows 2000/2003/XP/XP x64 & Vista- available PS/2- portpackage content:- NetScroll 200 Laser PS/2- mousespecifications:- interface support: PS/2- system support: Windows 2000/2003/XP/XP x64 & Vista- 3 buttons + scrolling wheel- resolution: 1600/800 dpi laser engine- dimension: 126x80x44 mm- gift box size: 190x142x48 mm- body weight: 95g