Simple operation stylish and userfriendly compact and portable connected to the mobile APP can be measured illumination, chroma and other light parameters. It is convenient for lighting designers or other professionals to measure the demand while improving the dimension of light, transforming invisible light quality into visible light parameters,and popularizing the recognition of light. Energy saving, super long endurance for one year after full charge, eliminating charging trouble. From the perspective of industrial design, of the professional lightingmeasuring equipment from a heavy device into a simple and easy to use and fashionableand portable device, compared with the former generation. Using the golden ratio to readjust and optimize the aesthetic feeling and touch feeling.It has improved users experience, making it not only suitablefor men, but also to meet the experience and psychology of many female designers.