4.0 stars, based on 94
Clarity Portable Telephone Handset Amplifier features Clarity Power technology which makes telephone conversations not only louder,but also clearer and easier to understand
Boost button allows for even more amplification and eliminates background noise and feedback by muting the microphone in the handset.
It is a battery-powered phone amplifier with slide controls for both volume and tone, providing up to 40 decibels of amplification for telephone users with hearing loss
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