Sminiker Wireless In-Car FM Transmitter Bluetooth Radio Adapter Stereo Music Modulator Car Kit With USB Car Charger and 1.44 Inch Display,Hands Free Calling and Support TF/Micro SD Card Easy to use, just connect bluetooth between cellphone and FM transmitter, answer calling or playing music become so easy, ensure your safety. High-performance built-in microphone which can offer your clear hands-free calls and wonderful music. Amazing LED display can show the name of songs or caller ID, also current voltage of the storage battery of your car. USB charging station: Provid your a 5V/2.1A fast charge port. Your phones or any device using the usb cable won't power off! Broadcast the best & clearest quality sound through FM radio station (87.5 ~ 108 MHz) and streams your music from your smartphone or bluetooth MP3 devices.