1Pc/1Pair Hearing Aids In-Ear Invisible Digital Enhancer Voice Sound Amplifier
£20.39
Could be worn on both left and right ear. Equivalent input noise level: ≤ 29dB+3dB. Output sound pressure level (high-frequency average): 112dB ± 3dB. Full range sound gain (Zui large gain): 35dB ± 5dB.
