Product Features: 1. Auto On: Automatically powers on when connected to a power source, making it convenient for use in cars or other applications requiring auto-on functionality. 2. Dual Device Link: Simultaneously pair your smartphone and tablet to stream music from either device through any stereo system with a standard 3.5mm jack. Connect two Bluetooth devices at once for seamless music playback and phone calls. 3. Dual Audio Connection: Supports simultaneous connection via 3.5mm audio port and auxiliary input. 4. Hands-Free Calling & Navigation Broadcast: Built-in microphone enables hands-free calling. One-touch controls to answer, redial, hang up, or reject calls. Supports voice guidance from navigation apps for safer driving. 5. Wireless Music Streaming: Stream stereo audio wirelessly to non-Bluetooth headphones and speakers. 6. Space-Saving Design: Ultra-compact design for easy portability and compatibility with a wide range of devices. 7. Stable Connection: Equipped with Bluetooth 5.3 technology for reliable pairing, fast transmission, and extended signal range up to 33 feet. Connects to non-Bluetooth car stereos, home audio systems, wired headphones, speakers, amplifiers, and home theaters via 3.5mm AUX port. Enjoy high-quality wireless audio streaming. Note: This is a Bluetooth receiver only, not a transmitter. It cannot be used with TVs, keyboards, or mice. 8. Auto-Connect: Automatically reconnects to the last paired device when powered on. 9. 3-Button Control: Next track/Volume up, Previous track/Volume down, Multifunction button. Material: Plastic Color: Black Package Contents: 1 x Bluetooth 5.3 Audio Receiver 1 x USB Cable 1 x Audio Cable 1 x Cable (Color may vary; specific colors cannot be requested) Note: Wiring colors are shipped at random; specific color requests cannot be accommodated. Contents are limited to the items listed above; other products are not included. Note: Lighting and display differences may cause slight variations in color between the product image and the actual item. Measurement may vary by +/- 1-3 cm.