Check the listing for details. Bluetooth 5.0 2in1 Transmitter Receiver Car Wireless Audio Adapter USB 3.5mm Aux. Color: Black, Condition: New. Listed at 4.76 USD. Functions: Transmission mode (suitable for sending computer/TV/radio/MP3 audio to Bluetooth headset/stereo) Receiving mode (suitable for ordinary audio/car/wired headset, etc.) Transmit/receive mode switch: The audio cable is inserted into TRANSMITTER for transmission mode, and the indicator light is blue The audio cable is plugged into RECEIVE for receiving mode, and the indicator light is red Plug in the computer for launch mode, no need to plug in the audio cable, just plug in the USB Specifications : Model: YET-TR6 Bluetooth version: 5.0+EDR Technology: BT5.0, AVRCP (receiver mode only), A2DP Operating range: up to 10 meters/33 feet (no obstacles) Transmitter mode: blue LED light is on Receiver mode: red LED light is on Product size: 25*42*11mm Product net weight: 8g Packaging: 1/2 x 5.0 Bluetooth receiver transmitter 1/2 x audio cable 📍Note: Color that you placed will be first choice to delivery. But if it is out of stock, other colors will be replaced. Please read this note as carefully as you can when you place an order. Please allow 1-3mm（0.039in) differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Welcome to buy it.😀