inputs.text: adequate - purchased 3 months ago use work vehicle never used sd card slot no opinion used usb port start 200 songs thumb drive random feature repeated 10 songs navigating folders usb tough without remote intent using usb perhaps try different transmitter usb port charge phone simultaneously using 35 mm port play music phone almost exclusively use android phone mp3 files pandora app love transmitter buddy used ipod iphone transmitter work great cord came product failed within first couple weeks im using replacement cord already mini dvd player plays great vehicle speakers via transmitter seldom get static amfm radio picks faint signal far away maybe couple times month less hour main reason mediocre rating tip dc plug came unscrewed need unplug unit turn vehicle constant power aftermarket oultet tip loose small pieces lost somewhere vehicle cant locate could prevented checked screwon tip every often likely buy exact product tip doesnt turn soon