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Earphone compartment portable rechargeable hearing aids
$32.86
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1.Maximum saturation sound pressure level:<120dB + 3dB.
2.Output sound pressure level (high-frequency mean): 110dB + 4dB.
3.Full range full-ongain (high-frequency mean):30dB + 5dB.
4.Frequencyresponse range:No narrower than 450hz~3000hz
5.Total harmonic distortion: Measured value isn't tobe greater than 10%.
6.Equivalent input noise level:Measured value is to be<30dB.
7.Consumption ofrated power supply current: ＜10mA
