The Fanstel ST50 is a sophisticated amplified speakerphone that can digitally adjust frequency-specific volume levels so that any user, especially those working in extremely noisy environments, can comfortably and clearly hear a caller's voice.
It boasts highly flexible sound settings: incoming voices may be amplified by up to 52 dB with extra amplification for high frequencies. Caller ID screen viewing area: 7.4 square inches.
