Adopt a 3.5-inch capacity touch panel with human-machine interaction interface for convenient operation. Contains multiple electronic color charts, which can quickly match the closest color code with a color chart matching accuracy rate higher than 90%；the color difference threshold can be set and a variety of color difference formulas are optional. A variety of color spaces are available, suitable for various needs of color measurement. Can store 1000 colors and 1000 color comparison records with large storage space. The instrument has a built-in compensation optical path with stable values, allowing long-period calibration；With built-in rechargeable lithium battery, the instrument can measure continuously for 10,000 times under full charge.