No comments, instant purchase OK. Operation confirmed. Purchased from an authorized dealer about six months ago. This is a pure Japanese product, with world-leading patented technology, and all processes of research, development, and manufacturing are carried out in Japan. [Included items] Main unit Charger AC adapter USB cable Outer box Alpha Nest 2 directly transmits the 10.8Hz α wave, which is the brainwave of a healthy teenager, to the vagus nerve, which controls the autonomic nervous system. It regulates the autonomic nervous system, which is disrupted by stress and aging. The improvement of physical and mental disorders caused by the disruption of the autonomic nervous system varies from person to person. Please give it a try. #AlphaNest2 #HealthDevice #αWave #Sports #Golf