Nothing in the description indicated that there is no power source included. The transmitter has 2 wires coming out that you have to connect to 12 volt transformer to plug into the wall. You have to be an electrician to figure this one out! Also the ear phones have a buzz in the background that is a bit annoying.Buy Power Acoustik HP-22IRT 2 Swivel Ear Pad Single Channel Infrared Wireless Headphones with Transmitter!