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30000 HZ Ultrasonic Frequency (1 hour)

1 to 30000hz original sound for cleaning speakers

30000 HZ Frequency (2 Hour)

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IT HEALS EVERYTHING ➤ 300'000Hz HIGHEST HEALING VIBRATION FREQUENCY

30000 Hz || 30 kHz Sine Wave Sound Frequency Tone •♕• - 10 mins

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ATTACK CANCER pure tone 300,000 Hz frequency healing | BLACK SCREEN

RECEIVE The HIGHEST HEALING VIBRATION FREQUENCY 100'000Hz ➤ 300'000Hz

20000Hz Ultrasonic Mouse and Rat Repellent (11 1/2 Hours)

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20000 Hz Test Tone 10 Hours

30000hz!! Extremely Powerful Projection Music with Theta Waves

25000 Hz clean pure sine wave TEST TONE 25 khz frequency

From 0 to 30000 Hz in 30 Seconds

Sound frequency from 0 Hz to 30,000 Hz