MFi F11B FM Transmitter Car Charger Holder with Remote Control for iPhone 4S 4 iPad 3 iPod Touch 4 The unit has passed apple MFi certification, compatible with iPod/iPhone Cigarette Lighter power supply mode USB output charging for Mobile Phones, GPS, and other devices. LCD frequency display with backlight for easy to read display. Hi-Fi FM stereo transmitter allows you to fully enjoy your music Tightly fitting clamps hold your device securely