VicTsing 3.5mm In-car FM Transmitter Radio Adapter for iPhone 5S 5C 5 5G 4S 4 3GS 3G HTC One M7 with Car Charger - Collapsible (White) FM Transmitter for iPod / iPhone 5G/4S/4G/3GS/3G and other MP3 / 4 players,mobile phones. Hands free talk function offer you more safty during driving. LCD displayers frequency with backlight. With Touch key design,High fidelity stereo. Digital PLL,transmisson is stable in different environments.