It's definitely useful, but you must choose a smart watch for the elderly. For example, it can measure blood pressure, monitor body temperature, warn hypoglycemia, regulate abnormal emotions, relieve stress, manage sleep management, remind sedentary activities, guide shoulder and neck activities, health suggestions, blood pressure reports, sleep reports, acupoint-assisted diagnosis, health trend analysis, risk prediction and evaluation, etc. There are few products that can be realized at present. This concept was put forward by Zhixin Data, but it seems that they haven't been listed yet and should still be tested.