USB+PD interface connection. Then you can listen to music or make a call. FM frequency: 87.5-108.0MHZ. FM function (3)The frequency range of car MP3(87.5-108.0),when the product lights up, a frequency will appear on the display, in order to use the sound quality to the best, adjust the car's frequency to an empty frequency, then match the product with a good frequency.
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