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Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs

Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Portable Digital Tone Hearing Aids Aid Deaf-aid Behind The Ear Sound Earphone Amplifier Adjustable with 4 Earplugs
Features:
- Low noise, low distortion;
- Product use hearing assistive devices.
- Taboos otitis media or ear suppuration who are disabled.
Technical indicators:   
Full profile acoustic gain ≥38dB    
Power Supply Voltage 1.5V    
 
Maximum saturation sound pressure level: 129dB ± 4dB    
Harmonic distortion: ≤ 15% f <1000Hz,  F> 1000Hz ≤ 10%    
Equivalent Input Noise: ≤ 30 dB    
Working current: <8mA
 
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.    
Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids.    
 
1 x Digital Tone Hearing Aid
4 x Earplug
1x User's Manual

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