This is a colorimeter and a spectrop ometer, which can measure CIE-Lab,CE-,,Yxy,RGB,CMYK and other parameters. It can also identify two color differences, judge whether they are qualified or not,and tell you the color bias, such as "more red less green". It can measure a color, find the color card number closest to the color, or establish its own color database. It has the function of color inspiration to help you match your favorite colors at . Whether you are an interior designer, painter or just want to paint your home, she is your very clever color measuring tool. The color difference can be measured when the machine is alone, This is a great advantage of this machine. Many color sensors are very small and can be put into a pocket, but it is not possible to measure color and color difference on a single machine. This machine can, with a small screen, load the information you need. Product model:CR20 Measurement structure:45/0 Light source:LED (full-band balanced LED light source) Measurement aperture:4mm Wavelength interval:10nm Wavelength range:400nm-700nm Applicable to printing, plastics, leather, coatings and other fields Main functions:color difference measurement, color number search, color library construction Note: If you are not professional for technology, please don't buy this product Installation guide not included, we strongly recommend you professional installation. Please check as much as possible to make sure the item is what you need. Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use. Colour:White Material:Plastic Package Contents: 1 * CR20 Colorimeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.