price 300 RUB.
The disc contains one long track (80 minute), listening to stereo headphones which helps to immerse in deep sleep. The beginning will sound a voice of the user, giving your body relaxed and mind focused state.
Then they disappear, leaving only the audio signals of the "x-sync" that helps promote deep Delta sleep and then sustains it as strong and healthy sleep.
Can disconnect, at least in the beginning, though at the end of it — the sooner, the better.