ZJtech Wireless In-Car Bluetooth FM Transmitter Radio Adapter Car Kit with USB Car Charger 1.44 Inch Display UNIVERSAL COMPATIBILITY - Work with Bluetooth enabled devices. Like iPhone, iPad , iPod, Galaxy, HTC, Blackberry, Cameras, PDAs, Mobile Phones; Support AUX output and input; Support TF / MicroSD Card up to 32G memory; Support A2DP ENJOY LARGE SCREEN - 1.44 inches screen provides clear display, Amazing LED display can show current voltage of the storage battery of your car, also the name of songs or caller ID. STEREO SOUND QUALITY - Utilized most advanced interference and noise cancellation technology, achieve the stereo music lossless transfer to your car speaker. Built-in microphone feature can offers your hands free talking and wonderful music. USB CHARGING STATION - With an universal USB charging port (Output: 5V/2.1A), can charge your mobile phones or other portable devices EASY TO USE - Plug the FM Transmitter in the car cigarette lighter, adjust FM Transmitter and car radio, make them at the same frequency (frequency range from 87.5 to 108 Mhz). Then let your phone/audio players connect this FM Transmitter via bluetooth/audio line. Next time it will pairing this device automatically.