[HiFi Stereo Audio] JOYROOM Bluetooth receiver features the latest Bluetooth 5.3 technology, improving transmission delay and connection stability compared to older Bluetooth 5.0 versions. This Bluetooth 5.3 adapter delivers a faster, more stable, and reliable 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 all directions, enabling smoother calls. Enhanced CVC 8.0 noise reduction technology and built-in filter IC effectively reduce road noise, electrical interference, and other background distractions, resulting in clearer hands-free conversations. [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 pairs with your phone. Supports simultaneous pairing of two devices for seamless music streaming and hands-free calling. [Multifunction Button & LED Light Design] The dedicated button on the Bluetooth receiver allows one-touch control for next/previous track, volume up/down, answer/end call, and redial functions. Designed for ease of use and 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 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.