Arm sphygmomanometers measure blood pressure more accurately, while wrist sphygmomanometers are more portable but have a slightly higher margin of error. As far as accuracy is concerned, arm sphygmomanometers are better. Due to anatomical factors, the brachial artery is located closer to the heart, as measuring brachial blood pressure is a little more accurate. The arm sphygmomanometer is used to obtain blood pressure by measuring brachial artery pressure with a cuff attached to the upper arm and a stethoscope placed at the location where the brachial artery beat is most pronounced. Therefore, arm sphygmomanometers are more accurate. Wrist sphygmomanometers are strapped to the wrist, which is farther away from the heart, and the measured blood pressure value will be slightly more inaccurate. However, wrist sphygmomanometers are more portable and can measure blood pressure anytime, anywhere. It is suitable for the elderly population with high risk factors for hypertension and for elderly patients with hypertension who need to monitor their blood pressure. For better guidance of medication, it is recommended that the value measured by the arm sphygmomanometer should be used for monitoring blood pressure, while the wrist sphygmomanometer is for general reference only. If there is any discomfort such as dizziness, prompt medical attention should be sought.