1 beautiful appearance and the perfect combination of the structural design of human mechanics; 2 standard 45/0 geometry optical structure, in accordance with CIE, ISO, ASTM, DIN related standards, the accuracy of unparalleled; 3 large 3.5 inch capacitive touch screen with a pure screen design interface, friendly interface, the operation of the extraordinary experience; 4 standard observer angle, a variety of light source model, a variety of table color system, in line with a variety of standard color indicators, to meet the needs of a variety of customers on color measurement; 5 repeat accuracy of delta E*ab is less than 0.04, Taiwan difference E*ab less than 0.2, stable performance test;