The module is a Bluetooth audio transmitter module integrating computer USB sound card to Bluetooth transmission and line audio input and transmission. | It adopts Bluetooth 5.1 technology to greatly ensure the quality and stability of audio transmission. | Stereo audio input, strong versatility. Intuitive LED indication.Simple and easy to use. Work voltage: DC 3.3V-5V. | This product can be used in most desktop computers, laptops, televisions, projectors, game consoles and other products | After-Sale Service: Thanks for your purchase. If you have any problem , please feel free to contact us any time. We promise you the satisfying solutions within 24 hours.