BT10 2 In 1 USB Bluetooth 5.0 Transmitter Receiver Speaker Computer Wireless Headphone Adapter 1. Bluetooth fast matching connection, more convenient to use 2. No driver required, plug and play 3. Just plug it in, it can be turned into a bluetooth speaker 4. Bluetooth 5.0, smart compatible 5. Built-in noise reduction HIFI sound quality 6. 15 meters transmission, stable signal 7. Fully compatible, automatic matching 8. Receive RX + transmit TX two-in-one design, two-signal one-key switching, simple and convenient to use, suitable for a variety of devices 9. When the red light is on, it means entering the launch mode, and the default is in the launch mode. 10. When the blue light is on, it means entering the receiving mode. Press and hold the function key to switch the mode. 11. Suitable for computer, TV, projector (transmitting mode)speaker, earphone (receiving mode) 12. Interface: USB 13. Material: ABS+PC 14. Input voltage: DC 5V 15. Transmission rate: 10Mbps 16. Operating frequency: 2.4MHz 17. Dimensions: 43 x 21 x 11mm 18. Weight: about 5g