1. Product introduction This product has a comprehensive function of car bluetooth hands-free phone, car bluetooth FM transmitter car car charger car MP3 card identification. FM35 is a special bluetooth fm transmitter, car bluetooth hands-free, car mp3. He uses a dedicated audio decoding Bluetooth module, which can play lossless music formats such as MP3.WMA.WAV.FLAC music formats, and can wirelessly transfer music files in AUX, U disk, and TF card (memory card) to the car stereo. Moreover, as long as your mobile phone is equipped with Bluetooth, the music in your mobile phone can be transmitted to your car stereo, the incoming call can be switched to the hands-free state, and when the call is over, it will automatically switch to the music playback. 2. Function: Bluetooth FM transmitter: transfer the music in the mobile phone, AUX, U disk, TF card (memory card) MP3 to the car audio for playback. Car dual-port charging: It can charge mobile phones and iPads intelligently at the same time through the USB interface. Car Bluetooth hands-free: The mobile phone can make hands-free calls and reject calls through Bluetooth with one button. Car USB: U disk can be read through the USB interface. High-fidelity stereo, using DIGITAL, PLL phase-locked loop technology. LED display frequency, more convenient to choose Full frequency point transmission (up to 200 frequencies can be selected) With power-off memory, it can store the currently playing frequency Direct key, play/pause, previous/next song 3. Product Features: FM transmitter Frequency display window Power failure frequency automatic memory function Vehicle voltage detection function Support the use of U disk, TF card (memory card) audio input to play music (maximum support 32G) Support MP3.WMA.WAV.FLAC music format Answer/hang up/reject/recall via bluetooth Bluetooth stereo music playback Call echo cancellation and noise reduction (CVC) technology USB output voltage, can quickly supply voltage up to 5V/3A to other devices Package included: 1 x FM Transmitter 1 x User Manual (NO Retail Box) (No Retail Package)