Bluetooth 5.3 Audio Transmitter Receiver - Fast, stable wireless audio transmission in both transmitter and receiver modes. This device is designed to send and receive audio over Bluetooth with reliable performance. - Connectivity options include 3.5 mm, fiber optic, and coaxial interfaces. Easily connects to a wide range of audio devices that use these common inputs and outputs. - U disk function supported. You can play stereo music directly from a USB drive without needing another source device. - Wireless adapter dongle functionality. Seamlessly bridge legacy audio equipment with Bluetooth enabled devices, enabling wireless playback from older systems. - High quality audio performance. Designed to preserve audio fidelity for an immersive listening experience. Use scenarios - Upgrade a traditional home stereo or AV system. Connect the unit to the stereo or AV receiver using 3.5 mm, optical fiber, or coaxial, then pair with Bluetooth speakers or headphones for wireless listening without replacing existing gear. - Watch TV or use a computer with Bluetooth headphones. Use the device as a Bluetooth transmitter to send TV or PC audio wirelessly to compatible headphones or speakers, improving comfort and flexibility. - Play music directly from a USB drive. Use the U disk function to access and play stereo music straight from a USB storage device, independent of other sources. Notes on compatibility and function - Works with devices that provide 3.5 mm, optical fiber, or coaxial connections, and with Bluetooth enabled receivers. The unit functions as both a transmitter and a receiver to support multiple setups and uses.