The new 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.