SpectraViewII is an award-winning NEC display technology with a color-measurement sensor and sophisticated calibration software, Download Spectraview2 Software Now! Spectraview 2. (Bottom): The NEC/X-Rite iOne Display 2 colorimeter is designed to be used with both standard and wide color gamut NEC displays with custom calibration sensors to read each. It is included with the SpectraView II software with all SpectraView-designated NEC LCD displays. The SpectraView I and SpectraView II were sold over the course of 1984 till about 1991 or 1992. If I remember correctly, (and I probably don’t), but I think the SpecrtraView retailed for about $2000 US and the SpectraView II cartridge retailed for about $900 US. SpectraView II communicates with the display monitors using Display Data Channel - Command Interface (DDC/CI) which is a two-way communications link between the video graphics adapter and display monitor using the normal video signal cable. No extra cables are necessary.