All in One Button: One button operation allows you to seamlessly switch between incoming calls and music. By pressing and holding, the button button can achieve a mode switch. Changing the FM frequency, adjusting the voice volume and hands-free calling are so easy. | Get your music ready: The car Bluetooth adapter is equipped with AUX output and U disk connector. With a 3.5 mm audio cable, it easily transfers music from the device to the car radio. Music in MP3/WMA/WAV/APE/FLAC format is played immediately and easily. The car adapter can read U disks up to 64GB. | Wireless Radio Receiver: We know that car stereo systems have a louder and better sound compared to FM transmitters. So once you have connected the FM transmitter and car radio via the FM frequency, phone and FM transmitter well via Bluetooth pairing, enjoy your Spotify/Netflix/Youtube/Voice Navigation! | Bluetooth 5.0 Wide Compatibility: Built-in advanced Bluetooth V5.0 chip, FM transmitter Bluetooth provides faster pairing and more stable sound than other normal products on the market. The FM transmitter is also compatible with all Bluetooth enabled devices such as iPhone, iPad, LG, Samsung, Tablet, HTC, Sony and other Android smartphones. In addition, it is also suitable for all 12-24 V cars/trucks. | Multi-safe protection: FM transmitter Bluetooth for car comes with built-in over-current protection, over-voltage protection, intelligent temperature control and short circuit protection. Its low noise and low ripple output, which can effectively reduce the loss of electronic devices within the charger. It effectively prevents multiple problems, protects your beloved car and your smart devices.