What is Brainon? 

Brainon is a medical device that uses high frequency sound to help activate EEG (Electronic EEG) through auditory stimuli.
Dabo Industries has obtained a medical device manufacturing certification from the National Institute of Medical Device Safety Information with an audible-induced reactive magnetic stimulation device.
"Aural-induced stimulator is a type of stimulator, a device that provides adequate stimulation to stimulate the auditory system." It is used to measure induced reactions or to activate brain waves (EEGs).

This product is a medical device and should be fully trained in its use and precautions before use.
Ad review: Review number 2019-I10-43-3363