This Upgraded Bluetooth 5.3 Receiver is an excellent choice for those who need a simple yet reliable Bluetooth connection in their car. Simply charge it up, plug it in your vehicles AUX input and pair your smartphone to it. Once paired, you can seamlessly play music or make/receive phone calls completely hands-free and without a messy wired connection. On one side, you have the AUX output. Opposite to that is a volume up/down button. Adjacent to both is the USB-C charging port. The face of the receiver features a “multifunction button” that allows you to play/pause music or accept/reject phone calls.