Pairs Digital Invisible Hearing Aid Mini In Ear Top Sales Online Ebay Or Amazon USA Market Based Adsound Affordable OTC Hearing Aid Personal Sound Amplifier

Pairs Digital Invisible Hearing Aid Mini In Ear Top Sales Online Ebay Or Amazon USA Market Based Adsound Affordable OTC Hearing Aid Personal Sound Amplifier Specifications: 1. Light Small Sound Amplifier Adjustable Tone In ear Canal ITC Hearing Aid 2. When you see the film, watch the play, have meeting, or have classes, this product can help you to hear the sound clearly and loudly 3. Made of durable soft plastic material that comfortable 4. While in forest, if you want to hear very slight sound, it will be a good choice 5. It can be used for sound amplifier 6. Max sound output: 110±5dB 7. Sound gain: ?30dB 8. Total Harmonic Wave Distortion: ?5% 9. Frequency range: 300-4500Hz 10. Input noise: ?30dB 11. Mini Size: 16 x 12 x 0.9 m,tiny as the fingertip 12. Voltage: DC 1.5V,A10 size battery 13. Current: ?4mA url:http://www.byvisiontech.com