Blood pressure measurement by electronic watch can be used as a reference to roughly understand the fluctuation range of blood pressure, but the exact value should be measured by a sphygmomanometer.
Blood pressure is the pressure of blood on the walls of blood vessels in the process of blood flow, and must be measured using professional equipment, usually using two kinds of mercury sphygmomanometers and electronic sphygmomanometers. The cuffs of sphygmomanometers are not randomly customized, but are obtained through a lot of clinical experience and experimental data, and are suitable for most people.
The accuracy of the watch measurement cannot be guaranteed, and the varying accuracy of electronic products cannot guarantee the correct measurement of blood pressure, and can only be used as an approximate reference. Therefore, the use of watch measurement is not reliable, it is not recommended to use the watch measurement, or to use a sphygmomanometer to measure correctly.