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Loud and clear sound amplifier body hearing aid
Loud And Clear Sound Amplifier Body hearing aid
When you see film, watch the play, have meeting, or have classes, the product can help you to hear the sound clearly and loudlyWhile in forest, if you want to hear very slight sound, it will be a good chioce.
3. Total harmonic wave distortion: 5%
4. Frequency range: 300~4000Hz
