FM Transmitter Amtake&trade; Radio Car Kit with 3.5mm Audio and Car Charger for iPhone 6/5/4, iPad, iPod, Samsung All Smartphones -With Micro USB Charging Cables for Samsung, HTC, Nokia, Android, Transmit your tunes from portable music players with 3.5mm jack to your car stereo speaker system. Comes with an extra USB port to charge your cell phones, GPS and other digital devices while driving. Full frequency range design effectively avoids interruption. Features a high-contrast, easily-read display and prominent button controls Simply plug in your audio device through 3.5mm jack, set a ramdon FM channel, and tune the car FM audio to that channel.