Feature:1.This extremely portable, lightweight wirele audio transmitter & receiver is an ideal wirele audio solution for a wide range of situations and uses2.Transmitter mode:wirelely streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers3.Receiver mode: wirelely streams audio from your Bluetooth-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones.4.There is no built-in battery, and it is powered by DC 5V usb interface: A.Insert usb power, the red light is on in the transmitting mode, the red light flashes when pairing, and the red light is always on after the pairing succeeds. B.Insert usb to power on, the receiving mode is blue light, the blue light flashes when pairing, the blue light is always on after pairing is succeful.5.Broad Compatibility: With the included 3.5mm cable, this Receiver Transmitter adapter can widely be used on your computer, laptop, home stereo system, headphone, smartphone, Mp3 player, CD player, etc.Specification:Name:Bluetooth 5.0 Transmitter & ReceiverColor:Black,Audio Port:3.5mm AUX/USBMaterial:ABSTransmit Distance:<10mFunction:3.5mm Bluetooth Transmittre & USB Transmittre & ReceiverCompatible Devices: PCProjectorTVAmplifierCarVarious types of speakers with 3.5mm interfacePackage Include:1x Bluetooth 5.0 Transmitter & Receiver Adapter1x 3.5mm Aux Cable1x User Manual