Special Features:

Wideband audio; loud noise protection; echo management; background noise reduction; call volume equalizer; quick disconnect; battery type: 2aa; cord length (cable to quick disconnect): 10 ft; headset controls: volume, mute, headset/handset select

Properties:

An electronic device whose audio frequency input signals control power from a source independant of the input signal and delivers audio frequency output signals of greater amplitude with respect to current and/or voltage. The output signals characteristics are uniformly related to the input signals. It operates at frequencies of 20 kilohertzs and below. It may or may not have signal switching capabilities.