Cyber Sonic Portable Sound Amplifier Hearing Aid brings the world to your ears.This?hearing amplifiers is a great solution for those who are suffering bad hearing condition or hearing loss. Professional?audiological theoretically designed with digital sound noise reduction processing, this ear device actively reduces background noise to provide great hearing experience to the maximum. With handy working mode switch button and volume control button, the user can make accurate adjustments in no time. A wonderful choice for the hard-of-hearing people, the deaf, the elderly, the hearing-impaired, etc.
Amplify sounds up to 40 decibels and adjust to either ear.Adjust volume to the minimum before wearing.
Choose an earplug of slightly bigger size to avoid whistler.
Increase volume gradually to avoid sudden increase in sound.
If you hear a howling, check the ear (silica gel) is appropriate and whether
the size of plug is tight, the appropriate choice of earplugs and plugged, make
sure no air leakage.
Keep the ear plug clean
Remove the battery if you don’t use it for long time.The specification of hearing aids:Max Sound Output: 130?5 dB
Max Sound Gain: 55?5 dB
Harmonic Wave Distortion: ?10%(1000Hz)
Frequency Range: 300-4500 HzBattery:
AG13 Button batteries (Included)Input Noise: ?30 dB
Working Voltage: dc1.5V
Working Current: ?3mA