Welcome to our store! 1. Multifunctional Design: In-car MP3 player with both QC3.0 fast charging and FM transmitter charging functions, achieving an integrated solution for multiple needs. 2. High-Speed Charging: The in-car MP3 player is equipped with QC3.0 fast charging technology, quickly charging mobile phones and other devices, saving you time. 3. Clear Sound: The car MP3 player supports Bluetooth 5.0, allowing you to enjoy clear music playback via wireless connection, providing a clearer and more stunning audio experience. 4. Flexible Use: The car MP3 player can play music stored on your phone or USB drive via Bluetooth connection and can also transmit music to your car stereo through the transmitter function. 5. Intelligent Function: The car MP3 player has a built-in microphone and supports hands-free function, making it more convenient and safer to enjoy the driving experience. Item Type: Bluetooth 5.0 Transmitter Material: ABS Product Voltage: 12-24V Package Includes: 1 x Bluetooth 5.0 Transmitter 1 x Instructions If you receive your item and discover any product issues, such as damage or an incorrect item quantity, please contact us immediately. We will do our best to provide you with satisfactory after-sales service.