Pantone huey Pro MEU113 Each package includes the hueyPRO emission-only colorimeter and easy-to use software Achieve color fidelity between all displays on your system with multiple monitor calibration User-defined white point and gamma combinations provide substantial control over the calibration and output matching Windows: PC with 300MHz; Windows 2000, XP, Vista, 7 Macintosh: Power Mac G3 or higher, 300 MHz;