[HiFi Stereo Audio] JOYROOM Bluetooth receiver features the latest Bluetooth 5.3 technology, improving connection stability and reducing transmission delay compared to older Bluetooth 5.0 versions. This Bluetooth 5.3 adapter provides a faster, more stable, and efficient wireless connection with minimal audio loss. Offers up to 100ft working range, suitable for everyday use. [Clearer Calls] The Bluetooth car adapter includes dual microphones that work together to capture your voice from 360, enabling smoother experience. Enhanced CVC 8.0 noise reduction technology and built-in filter IC effectively reduce road noise, electrical interference, and other background distractions, delivering clearer hands-free calls for both parties. [Plug and Play] Simply plug into the 3.5mm auxiliary jack and power via USB port. Once you start your car, the Bluetooth car adapter automatically connects to your phone. Supports pairing with two devices simultaneously for seamless switching between music streaming and hands-free calling. [Multifunction Button & LED Light Design] The Bluetooth receiver features an independent control button that allows one-touch operation for track navigation, volume control, answering/ending calls, and redialing. Designed for easy access, minimizing distractions and promoting safer driving. Integrated LED light helps locate buttons in low-light conditions. [Multi Safety Protection] JOYROOM Bluetooth adapter complies with national quality standards and has passed FCC, CE, RoHS, and BQB certifications. Built-in protections include overvoltage, overcurrent, short circuit, and NTC overheating protection to ensure safe and reliable operation. Type: Bluetooth Adapter Color: Black Material: ABS+PC Size: 40.5mm x 45.7mm x 11.4mm Package Contents: 1 x Bluetooth Adapter Note: Other items not included. Lighting and display differences may cause slight variations in color appearance.