QLinkTV Bluetooth Stereo Audio Transmitter Uses Bluetooth to connect audio from TV, iPod, Hi-Fi, MP3 player, media player, laptop and other devices to A2DP Bluetooth accessories Just plug it in to your device with included Stereo RCA to Stereo 3.5mm cables Working distance: up to 33 feet, playing time: up to 7 hours Includes: QLinkTV transmitter (roughly the size of a chocolate sandwich cookie), RCA stereo audio cable, 3.5mm stereo audio cable, USB charging cable, AC power adapter, user guide Pairs with the Clear Sounds QT4/QT4L Bluetooth receivers or any Bluetooth headset