Spyder 3 gives enthusiasts and advanced amateur photographers color they can depend on allowing them to faithfully reproduce on their computer displays and in their final prints. Datacolor products offer a more efficient digital workflow and allow users to achieve their creative vision quickly and accurately without having to become color gurus. The Spyder3Express colorimeter comes equipped with new state-of-the art optical design, 7 detector color engine and largest aperture in the industry making it the industry’s leading colorimeter. The easy streamlined user interface walks you through the calibration process. Spyder3Express provides consistent, predictable color on all your LCD, CRT and Laptop displays. Spyder3 helps photographers faithfully reproduce on their monitors what they see and capture with their camera. The Spyder 3 comes with Datacolor Spyder3Express Colorimeter, Software CD, Quick Start Guide, Screen Cleaning Cloth, 1- year hardware warranty Spyder3Express. System Requirements: XP 32/64, Vista 32/64, Win 7 RC ;Mac OS X (10.4 or higher) ;USB Port; Monitor Resolution 1024 x 768 or greater (with 1024x600 Net Book option) ;16-bit video card (24-bit recommended); 128MB of available RAM; 100MB of available hard disk space.