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Small and exquisite
How to reduce feedback/whistling for this hearing amplifier
and it's common for all kinds of hearing amplifiers and hearing instruments
[Easy Installation] The light tape is cuttable to fit any length
Hearing Aids for Seniors, Rechargeable Personal Hearing Amplifier Devices ITE Charging Case Blood Glucose Meter Small and exquisiteProduct details Specifications: Max sound output: 125+ 3db Sound gain: >= 28db+ 5db Total harmonic wave distortion: <= 3% Frequency range: 300 3500mhz Input noise: <=32db Voltage: d. c. 1. 5v Current: <=2ma Full charging: 6 hours Working time: 16 hours Built in 25mah recharging battery for hearing aid unit Charging box without built in battery needs USB charging cable Material: ABS Description: A hearing instrument is a kind of electronic device which
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