Input Noise:≤26dB±3dB. Max sound out put: 126±3dB. Sound gain:≥ 28dB±5dB. 2 Main Unit. - Which is convenient and comfortable to wear. Full charging with about 2 hours.
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Sonorizon Sound Amplifiers - Rechargeable Digital In-Ear Device with Adaptive Sound Boost - 20 Hour Battery - Nearly Invisible Hearing Amplification Buds for Adults & Seniors - By Sonorizon Hearing
MEDca Rechargeable Digital Sound Hearing Amplifiers - Invisible In-Ear Personal Audio Enhancers with Crystal-Clear Sound Aid, Intelligent Noise Reduction, LED Charging Case & All-Day Battery Life
1 Pair Rechargeable Digital Hearing Aids In-Ear Invisible Sound Voice Amplifie
Invisible Mini Digital Hearing Amplifier Sound Aid USB Rechargeable for Seniors
