Bluetooth Aux Adapter Receiver: Smof car Bluetooth adapter is designed to add bluetooth to your car. It turn home or audio system or speakers into a hand-free Bluetooth-enabled devices. If your vehicle don't have Bluetooth,this Bluetooth Car Receiver is great solution to help you listen to music or make phone calls through car speakers. High-Fidelity Sound Quality: Equipped with the latest Bluetooth v5.2 chipset, the 3.5mm Bluetooth adapter offers a 10m stable connection without delay. it is clear sound for both listening and speaking.Built-in microphone,this Bluetooth car aux receiver allows you to enjoy phone calls with hands-free calling straight through the car's speakers. With this Aux Bluetooth car kit you will be more safe and convenient to use GPS,make phone calls，listen to music when driving. Plug and Play: Smof 3.5mm Bluetooth Car Adapter is quite easy to use. Just plug it into the 3.5mm aux jack and power it by the USB port, no need to continually charge the battery! The Aux to Bluetooth adapter will automatically connect with your phone when you turn on the car. Hands-Free Calling: Built-in with microphones, Smof Bluetooth car aux receiver allows you to enjoy phone calls with hands-free calling straight through the car's speakers. With the help of this compact Aux Bluetooth car kit, you don’t have to look down at the phone on the move. Have a safe journey! Portable & Durable : Bluetooth Aux audio adapter for car is made of zinc alloy connectors and elastic cable which make Car USB Bluetooth adapter a portable mini size and can use it in different occasions.Any question when using the product,please feel free to contact us, we will help you solve the issue.thanks Smof Aux to Bluetooth 5.2 Adapter 3.5mm Bluetooth Receiver with Built-in Microphone Aux Input for Music Streaming and Hands-Free Calls Compatible with Car Speaker and Home Audio (No Charging Needed)