Basically, there are errors in measuring heart rate with photoelectric equipment for running smart watches on the market. Jiaming is now using the third generation heart rate measurement chip, and the error value is about 5 digits. More precisely, you can choose the heart rate band. Guangzhou International Health Industry Expo is a well-known international professional exhibition in the field of health, with a large number of exhibitors and buyers, and it is a large-scale health industry Expo in the Asia-Pacific region.