Check the listing for details. 2in1 Bluetooth 5.0 USB Audio Transmitter Receiver Adapter Wireless for Car TV PC. Color: Black, Condition: New. Listed at 4.58 USD. About this item: Transmission mode (suitable for sending computer/TV/radio/MP3 audio to Bluetooth headset/stereo) Receiving mode (suitable for ordinary audio/car/wired headset, etc.) 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 Specification: Item Type: Bluetooth Adapter Bluetooth version: Bluetooth 5.0+EDR Connection name: M188 Transmission signal distance: 10m Color: Black Input voltage: DC/5V Input interface: 3.5mm +USB Output interface: 3.5mm Item Size: 25mm * 11mm * 42mm 🚩Buyer's Note: 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. If you have any questions , please feel free to contact us. Your comment is very important to us, please don't give us a negative feedback, we'll solve all your problems, thank you for your support. You could contact me directly if you need wholesale, we will give you the best price. Thank you for your purchase!