... Model NO.: 2.4G Video: Without Video Communication: Wireless Color: Black,Sliver-gray,Iron-gray,Orange,Blue,Red ... packed in cardboard cartons. Origin: Shenzhen, China Type: Wireless Whisper Conferencing System Composition: Transmitter and Receiver Pointing Feature: ... Century Specification: CE, RoHS Product Description 2.4G Wireless Whisper Conference Audio system NEW.jpg Conference,teacher microphone ...