Small space design, all functions are concentrated on the 1.77*1.26 inch plane, a total of 3 buttons, can be easily noted | Dual USB ports support charging 2 phones at the same time | Car radio wireless bluetooth FM transmitter adapter to transfer calls or MP3 to car speakers | Hands-free function, built-in microphone, one-click answer/reject/raise hand/recall everything | Car battery voltage detection, FM transmitter will display the car's voltage when the cigarette lighter is inserted. Stay up to date with the health of your car's battery to avoid problems while driving

1：Simply plug the 3.5mm auxiliary adapter into the AUX input of the old audio device and pair it with your Bluetooth device. You can easily enjoy your favorite music . | in Bluetooth Car Kits2: Using the latest Bluetooth 5.0 EDR technology, audio signal transmission will not be distorted, the connection is more stable, Support HFP / HSP / A2DP / AVRCP. The maximum connection range of 33 feet makes your life smarter. | 3：Easy to Use: There are 3 function buttons on our Bluetooth receiver. It allows you to easily turn on/off, play/pause, adjust the volume/track, answer/reject/redial the last called number. . After the first connection is successful, the Bluetooth receiver can be paired automatically | 4【Up to 10 Hours of Battery Life】The working time of this aux Bluetooth adapter is up to 10hours when making calls or playing music. . In addition, this Bluetooth music adapter can be used while charging, which is very convenient. | 5：Extensive Compatibility: The portable Bluetooth receiver can connect two Bluetooth devices at the same time. And it can also be compatible with any iphone or Android smart phone and other Bluetooth electronic devices, very suitable for all kinds of old home or car audio systems and wired headsets. It also supports TF card music playback. Let you use without any restrictions.

【Wireless Music Anywhere】Enjoy fast music playback by pairing our Bluetooth 5.0 receiver adapter with your mobile phone. It works seamlessly with car audio systems, home audio, and devices with a 3.5mm AUX interface. | 【Easy and Convenient】Forget the hassle of manual connections. Our adapter has a memory function, automatically connecting to your device after the initial pairing. It's truly plug-and-play! | 【Dual Connections, No Missed Calls】Connect two devices simultaneously, ensuring you can enjoy music without worrying about missing important calls. Stay connected and entertained at the same time. | 【Compact and Long-lasting】Our Bluetooth adapter is small, lightweight, and easy to carry. With its built-in 100mAh battery, you get up to 4 hours of music playback. And don't worry about running out of battery - you can even play music while charging. | 【Effortless Volume Control】Easily adjust the volume of your Bluetooth audio system with the dedicated volume up/down button on our car Bluetooth receiver. Enjoy personalized sound with convenience.