Bluetooth 5.0 Audio Transmitter Receiver Mini USB 3.5mm AUX Jack Stereo Music Wireless Bluetooth Adapter For PC TV Car Speaker Product Features: 1.This extremely portable, lightweight wireless audio transmitter & receiver is an ideal wireless audio solution for a wide range of situations and uses 2.Transmitter mode:wirelessly streams audio from your non-Bluetooth TV, home stereo system, or CD player to your Bluetooth headphones or speakers 3.Receiver mode: wirelessly 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 successful. 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. Note: when you first insert The receiver, the light is Red, it is in TX (Transmitter)Mode, which will not switch to RX Mode automatically. It needs you to unplug The receiver and then insert again, the light will become Blue, and it is in RX(Receiver) Mode now. Sometimes when you in the same mode for long time, you need to repeat unplug and insert twice and it will change to the other mode, please remember: Red Light: TX Mode, Blue Light: RX Mode Transmitter mode (Red light): 1.Plug The receiver to your usb power, Switch to Red Light flashing; 2.Use the 3.5mm AUX/RCA cable to connect The receiver with your non-Bluetooth e.g.TV/PC/Laptop/CD Player/MP3/MP4; 3.Turn on your bluetooth headphone or bluetooth earphone into pairing mode. 4.Put it near to The receiver, Then it will automatically pair with your Bluetooth headphones or bluetooth speakers(When paired successfully,Red light will Stop flashing).Then you can listen sound from the TV/PC/Laptop to bluetooth headphone/bluetooth speaker. Receiver mode (Blue light): 1.Plug The receiver to your usb power,Switch to Blue Light flashing; 2.Use the 3.5mm AUX/RCA cable to connect The receiver with your non-Bluetooth e.g.Car/Wired Speaker/Amplifier; 3.Open your Tablet/Smartphone's bluetooth,Search The receiver,Then pair with it(When paired successfully,Blue light will stop flashing). Then you can listen sound from the tablet/smartphone to your Car/Wired Speaker/Amplifier. Package Content 1x Bluetooth 5.0 Transmitter/Receiver Adapter 1x 3.5mm Aux Cable 1x User Manual