• 9 years ago
More from Amazon.com : http://www.amazon.com/gp/product/B00191T0I2?tag=purrfectcatdi-20

Fanstel Amplified Speakerphone (ST45)

Up to 47 dB amplification at 115 dB SPL on handset
Frequency-specific amplification for handset
Auto-selects the best amplification level
Business grade speakerphone up to 77 dB SPL at 20-Inch
Loud ringer

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