Specification :

Integrated Microphone — Press and hold the record button to capture a message.
Continuous / Sound Activated Mode — Set the VoiceBox to play messages continuously or respond only when noise is detected.
Volume Control — Turn up the volume to train how to stay cool with frantic victims. Turn down the volume for extrication victim breathing or moaning sounds.
Reaction Sensitivity— Adjust the minimum noise level required to activate the VoiceBox in Sound Activated Mode.
Battery Operated — Four AA batteries power the VoiceBox for up to 9 hours in Continuous Mode or 15 hours in Sound Activated Mode.