FREE: Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable

The listing, Digital Tone Hearing Aids Aid Behind The Ear Sound Amplifier Adjustable has ended.

Low noise, low distortion;
For people with severe hearing loss;
Product use hearing assistive devices.
The scope of application of gas conduction hearing disorders.
Taboos otitis media or ear suppuration who are disabled.
Features:
Maximum sound output: 130 ± 5dB
Sound gain: ≥ 50dB
Total harmonic distortion: ≤ 5%
Frequency range: 300Hz ~ 40000Hz
Input Noise: ≤ 30 dB
Operating voltage: 1.5V
Battery model LR44
Current: ≤ 4mA
Weight: 74g
Instructions：
The wire plug connected to the headset.Then earplug connector (hard) to the headset, earbuds (silica gel) to connect to the headphone connector pedestal
The battery installation: Gently open the battery compartment cover, put a AG13/LR44 battery into the battery compartment in the right direction, then close the battery compartment .
Before you use this item ,you have to turn the O-N switch to O(off),and turn the sound volume to minimum
Then put this item on you ear, keep it tightly
Next, turn this item on(O-N to N), adjust the volume until you hear clear sound

Only bid on it if you agree to pay shipping fee. For shipping you have to pay $9.99. Free tracking number as listed. I can offer you 2 methods of paying:
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Shiping in 3-5 working days via Air mail (economy shipping comes with free tracking number can’t track online)
Delivers in 3-4 weeks.
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Thank you, Have a nice day!