Tour guide system receiver AGR600 Wireless Tour Guide System AG600Main Features: Using two AA ... Response 100HZ-12KHZ Dimensions 82mmX62mmX21mm Weight 73gExcluding the batteries Receiver AGR600 Power Supply 2X1.5V AA Operating Frequency 854MHZ-965MHZ Sensitivity ... system) --Transmitter AGT600 2 -Headset Microphone HM02 2 -Receiver AGR600 22 -Earphone PH01 22 -Battery Charger AG600-C 1 Selectable ...