The UGREEN CM596 Car Bluetooth Audio Receiver (UGR-90748) for cars uses the latest Bluetooth 5.3 chip, which provides higher transmission speed, greater reliability, stability, and lower power consumption; offering clear calls, ultra-low static noise, and CD sound quality.HANDS-FREE AND CLEAR SOUNDThe auxiliary Bluetooth adapter for cars solves the inconvenience of making calls and the problem of unclear call sound while driving. Simply press the large round button to make a call, and the built-in microphone will allow you to clearly hear the other voice. It ensures maximum communication quality and guarantees your safety.FASTER CHARGING AND LONGER BATTERY LIFEThe auxiliary Bluetooth adapter provides 15 hours of battery life whether you are making calls or playing music. And it only takes 2 hours to fully charge the device using the Type-C fast charging cable (included).CONVENIENT TO USEThe receiver can be easily used with car audio systems, speakers, amplifiers, and headphones. Just plug the adapter into the 3.5mm auxiliary port, and you can easily connect devices to mobile phones, tablets, etc.TWO DEVICES CONNECTION SUPPORTEDThis Bluetooth receiver supports simultaneous connection of two devices. You can easily switch devices for calls and music while driving, and also share music with friends at parties.