Photo 1 of ****SIMILAR*** 0.01Hz-20kHz Adjustable Schumann Resonance Generator, Schumann Sound Frequency Generator with Acrylic Case for Stress Relief, Relaxation, Sinusoidal&Square Wave, USB Powered, 5.9''*5.5''

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Photo 1 of ****SIMILAR*** 0.01Hz-20kHz Adjustable Schumann Resonance Generator, Schumann Sound Frequency Generator with Acrylic Case for Stress Relief, Relaxation, Sinusoidal&Square Wave, USB Powered, 5.9''*5.5''Photo 2 of ****SIMILAR*** 0.01Hz-20kHz Adjustable Schumann Resonance Generator, Schumann Sound Frequency Generator with Acrylic Case for Stress Relief, Relaxation, Sinusoidal&Square Wave, USB Powered, 5.9''*5.5''