3.5mm Male Audio AUX Jack to USB 2.0 Type A Female OTG Converter Adapter Cable Wire Cord
Description:
This cable can let you play music through USB flash with your AUX socket in your car.

Specifications:
Product interface: 3.5mm male to USB2.0 female
Applicable equipment: 3.5mm stereo audio plug in the car AUX port. 
Product material: injection PVC outer cover
Product function: data transmission and charging
Product length: approx 15cm
Color: white
Product weight: 5.7g

Note: 
Not all the cars can use this kind of cable. It has been decoded and can not be used for mobile phones.

1 x 3.5mm USB OTG Cable