The unit made by professional Hi-Fi solution; Cigarette Lighter power supply; Suitable for iPhone 5， iPod Touch 5， iPhone 5S， iPhone 5C provides hands-free (only can be used when connected with 3.5mm audio cable) conversations through your car speakers; Plays any iPhone 5/5S/5C， iPod Touch 5 audio output.USB output charging for Mobile Phones， GPS， MP3s and other devices; Tightly fitting clamps hold your device securely; Full frequency range design; Backlit LCD Screen. With a FM Transmitter， you can transmit your favorite tunes from portable music players to your car stereo quickly and easily. Just plug the FM transmitter into your portable devices and the adaptor into the car cigar lighter. Tune your car stereo or receiver to the clearest FM frequency， and enjoy your digital music with full sound and convenience. ¡¤ Insert the cigarette power adapter into the car¡¯s cigarette lighter. Then adjust this product to a suitable position and then put your device onto the cradle. ¡¤ Turn on the cars FM radio band and adjust to the frequency as set on this product. Radio Type: FM Frequency; Frequency Range: 88.1-107.9MHz; Interval: 0.1MHz; Effective Range: approx. 5m; Input voltage: DC 12~24V; Output voltage: DC 5V， 1A; Working environment: -10¡ãC~+55¡ãC; Dimensions: 138(L)*68.5(W)*42(H)mm; Weight:210g Pack includes 1x All-in-1 FM Transmitter 1x 3.5mm male to male audio cable 1x User¡¯s Manual