●The SW03 pro Bluetooth wireless audio transmitter supports two audio transmission modes: "USB Mode" and "Optical Mode." It adds Bluetooth functionality to devices without Bluetooth, such as , computers, laptops, and game consoles (e.g., /4 series/ series), allowing them to connect to Bluetooth speakers or headphones. It supports simultaneous connection of two Bluetooth speakers or headphones. ●The SW03 uses the latest Bluetooth chip technology, so it 't show up as a Bluetooth device on your phone, computer, or TV. Simply bring your Bluetooth device close to the transmitter to automatically connect. (Note: This product is not a "USB to optical fiber" converter.) ●Utilizing the ATS Bluetooth 5.4 chip and low-latency lossless decoding technology, it ensures sound quality and high-quality audio, allowing you to experience CD-quality HiFi music. ●Supporting dual-stream and multi-point connection, it can connect to two Bluetooth headphones or speakers simultaneously. (For best results, use the same Bluetooth headphones or speakers or the same audio codec.) Color: Black Material: ABS Package Contents: 1 * Audio Transmitter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.