Schumann Wellengenerator mit Koffer 0,1HZ~30KHZ einstellbar 7,83Hz Impuls Sinus
ab 21,65 €
They also have good effects. This product can not only output 7.83Hz Schumann waves, but also adjust the frequency in the range of 0.1Hz to 30KHz. The digital circuit crystal oscillator frequency reference is more stable and has stronger anti-interference ability.
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