Product Name: Hearing aidDiseases: hearing loss hearing impairmentProduct size: 6.6X4.3X1.6cmMaximum saturation sound pressure level: 129dB +3 dBRated supply current consumption: should be greater than 10mATotal harmonic distortion: the actual measurement should not exceed 10%Equivalent input noise level: the actual measured value should be greater than 32dBFrequency response range: not narrow with 450Hz-3000HzSymptoms: deafnessApplicable people: not limitedOptional hot spots: low-frequency noise reduction is simpleSuitable for the crowd: for moderate to severe hearing loss of the crowd
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