Summary: HEADPHONES REQUIRED Harmonic box x is a combination of binaural beats and monaural tones. Sub-delta is very relaxing. With the dual induction you'll be deeply relaxed in not time
Summary: HEADPHONES REQUIRED Harmonic box x is a combination of binaural beats and monaural tones. Sub-delta is very relaxing. With the dual induction you'll be deeply relaxed in not time