1.Dual USB port CHARGING, which can be used to charge multiple electronic devices in the vehicle at the same time. 2. Use TF card / U disk to store and play songs, which can be played directly after power on; (only USB2 supports usb disk playback / charging port, while USB1 can only serve as a charging port) 3. Supports MP3, WA music file format 4. Support the audio input function, insert the mobile phone into the car MP3 audio hole through the auxiliary cable, perform the FM broadcast department and get high-definition sound quality; 5.This player has the automatic tracking memory function, which can save you from worrying about hearing from the beginning when the device is back when the power is off. The player will remember the track that was playing when the power was turned off and will automatically start next time.