1Pair Mini In-Ear Aids Enhancer Sound Voice Amplifier Hearing Invisible Digital

Equivalent input noise (dB): 30d. Equivalent input noise (dB): 32. Frequency range (Hz): 300-5000Hz. HAF/FOG gain (dB); 29dB. Peak Gain (dB): 30dB士5dB. HAF OSPL 90(dB SPL): 115dB士4dB. Peak 0SPL 90(dB SPL) ≤120dB+3dB.

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