Enjoy Hi-Fi Stereo MusicThis bluetooth receiver 3.5mm adds Bluetooth functionality to non-Bluetooth car stereos or speakers.The bluetooth 5.3 aux adapter car can quickly connect to the phone and optimize the transmission delay and connection defect problems of 5.0. You can enjoy music within the Bluetooth range of 40 feet (12 meters). It is far superior to Bluetooth 5.0 in terms of wall penetration and transmission distance. Clearer CallingThe bluetooth car adapter is equipped with dual microphones working in tandem to collect your voice from 360 for smoother calls. The upgraded ENC Noise Cancellation 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 PlayJust plug it into the 3.5mm auxiliary jack and power it through the USB port! Start the car pairing to connect to the mobile phone Bluetooth, and it will automatically reconnect the next time you use it. The bluetooth aux adapter can connect to two mobile phones at the same time. In addition, it also supports TF card playback to meet your various needs. Multi-Function ButtonsAux Bluetooth Receiver is pasted on the dashboard near the steering wheel. Quickly operate with one hand to answer or reject or hang up or call back calls, switch songs, turn off lights, adjust volume, call voice assistants, and LED lights let you The buttons are easier to find at night, and one-handed operation makes driving safer. Multi Safety ProtectionThe aux bluetooth adapter for car has built-in withstand voltage protection, over-current protection, short-circuit protection, and NTC overheat protection. Make sure our equipment is safe to use. Notes: Be sure to close the car windows when you're on the phone the person is close to the adapter when talking Check whether the speaker on the phone call interface is switched to ''JR-CB3''.