- Serene high definition amplified telephone- Hi-definition sound technology for panoramic speech clarity- Power amplifier increases incoming sounds up to 20 times louder- Digital speech tone enhancement makes similar sounding words distinct and easy to…
- Serene high definition amplified telephone- Hi-definition sound technology for panoramic speech clarity- Power amplifier increases incoming sounds up to 20 times louder- Digital speech tone enhancement makes similar sounding words distinct and easy to…
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