Belkin F8Z439-P TuneCast Auto Universal Hands-Free AUX for iPod, iPhone, iPad and Galaxy  Models Product Type - FM Transmitter Features high-clarity, full-stereo sound Provides compact cable management.May not function properly with certain QuickCharge 3.0 devices Ultralight for portability; features compact cable management Comes with manufacturer's 32-year warranty Belkin recommends that USB port not be used while TuneCast Auto Universal is being used for transmit audio