... .5V,1.5A usb car charger 3.Hansfree,fm transmitter 4.LED display 5.Power switch Features ... and function:In-car holder and FM transmitter for iPhone3Gs,4Gs,5Gs Hands free , Extra ... for private calling HI- FI stereo music From iphoneFull FM frequency from 88.1-107.9MHzLED display4 Preset Channels ... holder car mount charger for iphone,5V,3A with handsfree,fm transmitter function,HC-08