What mobile medical devices are there to detect whether the body is healthy at home?

Many people have smart bracelets and body fat scales at home, and use these to look at their health, but many of these products have not been certified by the CFDA for medical devices, and the results of the tests are still inaccurate. Really want a more accurate detection of body indicators, the recommendation is still with CFDA certification of mobile medical devices, such as Lingtuo Technology's multi-functional health detector, compact size, easy to carry, can detect body temperature, blood pressure, electrocardiography and other 6 functions.