Big Data "Wearable devices need the support of big data. There are many forms of wearable electronic products on the market today, such as bracelets and watches. Although these products focus on health and mobile medical functions, but overall the function is not perfect enough, there is not enough features or apps to attract consumers. Wearable devices include not only hardware, but also big data and services at the back end of the hardware, which is what we call the ecosystem. The whole ecosystem is not perfect enough at the moment. We believe this is one of the main reasons why wearables are not widely used.