Features: OOTDTY Use durable and flexible high-quality cable to ensure high sound quality. Length: 20cm 8 inch 3.5mm male to usb 2.0 female cable, only designed for car 3.5mm AUX port, only worked if your car 3.5mm AUX PORT needs to have decoding function! Insert the 3.5mm male plug into the car GPS navigation, the AUX jack of the DVD speaker, and then insert the U-DISK into the USB female port to play music. This adapter cable can only support connecting USB disk (or other USB storage device) with car aux port 3.5mm for car music playback!! It cannot be used as a normal 3.5mm AUX port to usb port conversion cable!! It cannot be used to connect a headset/speaker type USB to devices with an AUX port (such as a computer or mobile phone)!! Specifications:Material: PlasticsLength: About 20cm/8 inchPackage Include:1x OTG AdapterWeight:Please allow 1-3cm