1 pocket transmitter, 1 tie clip microphone, 1 receiver, 1 electret headband microphone, 1 plug-in power supply True diversity system 80 selectable UHF channels (863-865 MHz) ACT function for transmitting the selected frequency to the pocket transmitter via infrared signal Auto-scan Volume and squelch controls Gain can be adjusted at the pocket transmitter Indication for channel, antenna A/B, ACT status and AF audio level (receiver), channel and battery status (pocket transmitter) Robust metal housing (receiver)