Features： 1、Multifunctional Use: The car radio music adapter supports Bluetooth connection for music playback, FM transmitter and integrated charging function for more convenient use. 2、FM Transmitter Function: The car Bluetooth MP3 player is equipped with wired car FM transmitter function, allowing you to enjoy high definition music in the car at any time. 3、USB Charging: The MP3 player FM transmitter features multiple USB charging ports, designed for convenient and quick charging of phones, tablets, and other devices. 4、Clear Sound: The Bluetooth FM transmitter supports multiple sound formats for clear and stable sound quality, providing immersive music experience in the car. 5、Easy to Use: The Bluetooth adapter radio transmitter has a simple and convenient operation, music playback can be controlled via phone, easy to control your favorite music. Specification： Item Type: Car Bluetooth MP3 Player Material: ABS Frequency Response: 20Hz-15Khz FM Transmission Frequency: 87.5-108.0Mhz Bluetooth Version: Bluetooth 5.0 Transmission Distance: Approx. 5 ~ 10m / 16.4 ~ 32.8ft Operating Voltage: 12V-24V USB Output: 5V 3.1A Music Format: MP3/WAV Size: Approx. 4.3 x 4.3 x 8.2cm / 1.69 x 1.69 x 3.23in Fitment: For IOS, for?Samsung, etc. phones and tablets, support all wireless charging mobile phone charging Package List： 1 x?Car?Bluetooth?MP3 Player