SmartEra&reg;Wireless RF Transmitter Receiver for PC and TV Audio Listening FM Radio: The headset can be used as FM radio separately, which search and lock channels automatically. Wireless Monitor: Place the emitter near babies, old people and sick people who need care, and the sound of the cared people can be heard from the receiver. Wireless Earphone: Wireless reception from any electrical device with audio output such as full-channel TV sound, PC, game player, DVD player, VCD player, audio device, MP3 player, and CD player.Wireless Net Chat Tool: It's a perfect audio-chat tool, provides infinite enjoyment. Full-channel TV sound: What will you do if there is your favorite TV program but you worry about disturbing others. Use of the wireless earphone enables you to watch wonderful TV program with mute function. Wired Earphone: Equipped with audio cable, the receiver can be used as a wired earphone.