TeckNet 3.5mm Universal In-Car Wireless FM Transmitter Radio Adapter Audio Plug and USB Car Charger for iPhone 6/6 Plus/5S/5,iPad,iPod,Samsung Galaxy Note,HTC,Sony,LG,Tablet PCs, MP3/MP4 and More Build in Rechargeable Battery - No need for extra power supply, just Connect the FM Transmitter to the 3.5mm audio-out port on your music devices and enjoy surround sound. Universal Wireless FM transmitter - Compatible with iPhone, iPad, iPod, Samsung, HTC, ,Sony,LG,Tablet PCs,MP3, MP4 player and most devices with 3.5mm audio jack.Transmits on FM channels 88.1 MHz - 107.9 MHz, 0.1Mhz. Memory Function-This FM Transmitter has the automatic memory function. It will record the frequency you used last time. Portable and Simply Design - Built-in digital display, shows the frequency clearly. Left and right buttons to adjust FM frequency conveniently. Never Worry about Power Off - Come with a car charger: built-in micro USB cable and a extra USB port,can charge your FM transmitter and cell phones, GPS and other digital devices while driving.