AIYUE(TM) 3.5Mm in-Car Wireless Fm Transmitter for iPhone 4S 5 iPod Touch Galaxy S2 S3 Mp3 Fm transmitter for apple iphone 5 / ipod / iphone 3g / iphone 3gs / iphobe 4 mp3 mp4 players, cell phones Hands free talk function offer you more safety during driving Lcd displays frequency with backlight With touch key design ,high fidelity stereo Powered by rechargeable built-in lithium battery, no need iphone's power