• 3.5mm Male AUX Audio to Female USB 2.0 OTG Audio Adapter
• Use for vehicle navigation, vehicular audio (attention: please make sure your device have the mp3 decode function, that can read the mp3 file from U-disk)
• Easily play music on your car
• Lightweight and compact design   

Note:
1. Not all the car with this interface can use this kind of cable. Some car's AUX are without decoding function
2. When using a U disk better not store too much, specific to the car AUX can support how much capacity can be used to read MP3. U disk can not have other documents inside and does not support folders. MP3 format music is needed only.
3. It is not a charger cable.