[HiFi Stereo Audio]JOYROOM Bluetooth receiver is equipped with the latest Bluetooth 5.3 technology, optimizing the transmission delay and connection defect problems of the old Bluetooth 5.0. Our Bluetooth 5.3 adapter will bring you a faster, more stable, and smarter connection with less sound quality loss. up to 100ft working distance, enough for daily use. [Clearer Calls]The Bluetooth car adapter is equipped with dual microphones working in tandem to collect your voice from 360° for smoother calls. The upgraded CVC8.0 technology and built-in filter IC effectively filters out more road noise, current sound, and other distractions, resulting in clearer hands-free calls on both ends of the line. [Plug and Play]Simply plug it into the 3.5mm auxiliary jack and power it through the USB port! Start your car and the Bluetooth car adapter will automatically pair your phone immediately. And it allows users to pair and share two devices at the same time to easily enjoy music and hands-free calls. [Multifunction Button & LED Light Design]The independent button designed by the Bluetooth receiver supports one-key up and down song/volume up/down/answer/hang up/call back. Ease of use, no distractions, and safer driving. LED lights make it easier to find buttons when night falls. [Multi Safety Protection]JOYROOM Bluetooth adapter strictly follows national quality standards and has passed FCC, CE, RoHS, BQB, and other certifications. The AUX Bluetooth adapter has built-in withstand voltage protection, overcurrent protection, short circuit protection, and NTC overheat protection. Make sure our equipment is safe to use. type:Bluetooth Adapter Colour:Black Material:ABS+PC Size:40.5mmx45.7mmx11.4mm Package Contents: 1 * Bluetooth Adapter