<ul><li>FCS F-22 Pocket Hearing Aid , Personal Sound Hearing Amplifier.</li><li>Pocket Hearing Amplifier with Volume Control Wheel and N-H & N-O Switch</li><li>Max Sound Output: 110dB 5dB, Fitting Range 10-80.</li><li>Total harmonic wave distortion: 5%. Frequency range: 300-4000 Hz</li><li>Suitable for Users with Mild to Moderate hearing loss.</li></ul><br><br>

FCS F-22 Personal Sound Amplifier, Pocket Sound Enhancer Hearing Aid for Old Age People Mild to Moderate hearing Loss