ihreesy Wireless in-Car Bluetooth FM Transmitter with 2-Port USB Charging for Android Smartphones &ndash; Blue It can play mp3 music from your cell phone with 3.5mm audio cable but will also support a USB flash drive or a micro SD card Built-in microphone: which allows to you to receive a phone call all while still remaining to drive safely Wireless remote supports 3 main operating systems: iOS / android / windows The function keys on the unit allows for playback, adjusting the volume, search, and a LCD screen with a screen lock