How to choose between arm-type and wrist-type blood pressure monitors?

Upper arm blood pressure monitors are more likely to be accurate on the user than wrist blood pressure monitors. The main advantage of a wrist blood pressure monitor is its portability. If you often travel with a blood pressure monitor, you may consider a wrist type. If you only use it at home, there is no need to consider a wrist type. Whether it is the upper arm or wrist type, it needs to be calibrated for accuracy on the user, because the accuracy depends on the user, and whoever uses it will be calibrated on the user. The "blood pressure" we often refer to during physical examination or measurement usually refers to the surface arterial pressure measured at the brachial artery in the upper arm. Therefore, the blood pressure value measured here is the most accurate. The arm-type electronic blood pressure monitor measures the brachial artery, so the values are more accurate. For people with blood circulation disorders (diabetes, hyperlipidemia, hypertension, etc.), the arm-type electronic blood pressure monitor is more suitable. The wrist electronic sphygmomanometer measures the "pulse pressure value" of the wrist artery, so the measurement value will be biased. However, the wrist electronic sphygmomanometer is easy to carry, so it is more suitable for people who are on business trips and traveling. As for the finger-type blood pressure monitor, it was proven to be unworkable not long after its emergence. Therefore, the finger-type blood pressure monitor is not suitable for any group of people and does not need to be considered.