Special Features:

Pshoulder microphone w/whistle function; aux input jack; 12 vdc; battery consumption meter; half mile range; off white color; on/off switch; volume control; 2 hr battery life: whistle; 20 hr battery life: loudspeaker

Properties:

An item consisting of a loudspeaker and a microphone housed in a common case. It may or may not include electronic circuitry to control its operation. Transmit-receive switching may be controlled by automatic, manual or remote operation. For a loudspeaker used as a microphone, see loudspeaker, (as modified).