From the perspective of design and manufacturing precision, electronic blood pressure monitors, whether wrist or arm, have the same testing specifications. Therefore, as long as the blood pressure monitor has obtained certification, the accuracy of wrist and arm monitors should be the same. However, as blood pressure measurements are influenced by the measuring posture, where the wrist is closer to the heart for arm measurements, the requirements are not as strict as for wrist measurements. If the wrist is farther from the heart, measurements must be kept parallel to the heart and any slight deviation can cause significant errors, affecting the measurement results. Additionally, individuals with peripheral system disorders (usually caused by diseases such as diabetes or arteriosclerosis) may experience significant errors in blood pressure measurements on the wrist, and it is recommended to use an arm-type electronic blood pressure monitor. Some people may experience significant measurement errors when standing, so it's advised not to measure blood pressure while standing.