Bluetooth FM transmitter is a product that increases the functionality of even the simplest car radio. Data from the transmitter is sent directly to the cars audio system. Thanks to the built-in Bluetooth function, you can stream music directly from your phone. SPECIFICATION Power supply: 12-24V DC Bluetooth: 5.0 Memory card slot: yes Playable file formats: MP3 / WMA / WAV / FLAC Material: ABS Built-in transmitter controls: YES Hands-free functions Noise reduction: CVC technology Frequency range: 87.5 ~ 108.0 MHz Voltage: 5V USB: 2 (3.1 A and 1.0 A ) + USB-C Support: PD3.0 / QC3.0