Bluetooth USB adapters offer better performance than previous versions in terms of longer transmission distances, faster data rates, and lower power consumption. Receive transmitter 2 in 1: Bluetooth transmission mode (TX): converts wired audio to Bluetooth signal and transmits Bluetooth device output. Bluetooth Receive Mode (RX): Receive Bluetooth signals and transmit topics to wired audio Connect via Bluetooth.: LCDy shows which Bluetooth devices study.Easy to use: Plug and play, Bluetooth transmitter and receiver without installing any external drivers.Bluetooth Ubiquitous: Portable adapter, can be used as a transmitter or receiver at the same time. Transmitter mode, convert your TV, PC, CD player, iPod, MP3/MP4 to Bluetooth transmitter. Receiver mode: ideal audio system to transmit music in the car