Item Type: 2 In 1 Audio Receiver Transmitter Material: Plastic Bluetooth Version: 5.0 Connection Range: Approx. 15m / 49ft Frequency Response Range: 10Hz-20HKz Signal to Noise Ratio: Less Than 110dB Function: 2 in 1 Receiving Sending Power Input: DC 5V Interface: AUX, RCA, Optical Fiber 1、[HD Sound] HD lossless sound quality, listening to songs, zero delay stereo sound quality, enjoy excellent lossless transmission sound quality and cinema sound effects. 2、[Rich Interface Design] Rich interface for receiving sending, and easy switching for all audio devices. Upgrade the old car stereo, easily connect to the car stereo phone, listen to music or navigation wirelessly. 3、[NFC Sensor Pairing] Touch connection, built in NFC sensor chip, close to the second automatic popup window, compatible with all kinds of NFC feature phones, reducing tedious operations. 4、[Connect Wirelessly] Turn ordinary speakers into Bluetooth compatible speakers, connect 3.5mm audio. The TV connects to the theater TV wirelessly, upgrades the Bluetooth compatibility in one second. 5、[Bluetooth 5.0 and Long Range]Bluetooth 5.0 is used to provide high quality wireless audio performance. 15m / 49ft transmission distance, large signal range, fast and stable connection, enjoy wireless connection. 1 x Audio Receiver Transmitter