X-Rite i1Display 2 Color Calibrator for LCD, CRT, and Laptop Displays (Old Version) Compact colorimeter for emissive color measurements of LCD, CRT and laptop displays Highest sensitivity in dark areas for better control in shadow detail and more neutral gray scale Detachable ambient light head to capture ambient light measurements - also serves as a dust protector for your device! Easily attaches to all models of LCD and CRT monitors with included built-in counterweight and suction cups Use at multiple workstations without additional licensing fees