MoKo Wireless FM Transmitter, Radio Adapter Car Kit with 3.5mm Audio Plug and 2.4A USB Car Charger, Compatible for iPhone X/ 8/8 Plus, iPad, Samsung Galaxy S9/ S9+ and More Smart Devices High quality stereo: Advanced audio codec chip guarantees high sound quality. Multifunctional Design: Simultaneously charges your device through the 5V/2.4A USB port during audio transmission. Wide Compatibility: Works with any device with 3.5mm jack including Android, iOS and Windows Phone devices, and other popular audio devices. Features a high-contrast, easily-read display and prominent button controls. How to use: Simply plug in your audio device through 3.5mm jack, set a ramdon FM channel, and tune the car FM audio to that channel.