AXON F-139 Ear behind Hearing Amplifier left and right ears common 4 files adjustable volume

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Silicone earplugs, ABS body, high quality made.
Behind the ear Amplifier: small in size, not easy to fall off and lost.
Advanced micro processor technology, offers clear sound amplification and reduce noise.
4 level volume, adjust with one finger easily.
Suitable for either right or left ear, perfectly fit ear canal.
Used for daily hearing: watch movie, drama, attend meeting, have class etc.

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