The Dreamfree EEGFree [thanks Kevin!] product is the ‘world’s first digital brain wave inducer that helps recharge the brain and accelerate the functions by inducing the brain waves that affect memory, concentration, intelligence, creativity, stability of the mind and body, sleep using the two of the five senses, vision and auditory.’
It’s Korean and I think that it’s supposed to relieve stress, help with learning and enhance vitality. Allegedly.