General Spec Screen Blue light LCD display FM Frequency 87.9-107.9MHz Function ideal for charging for your iPod. Compatibility iPhone 2G/3G/3GS/4G, iPod Touch 3rd/2nd/1st, iPod Nano 5th/4th/3rd/2nd/1st Others Features High quality, excellent stereo and digital PLL. Allow you to charge and listen to the FM radio in a car. Can adjust the volume of your FM radio to the desired listening level. Powered by car cigarette charger. Suitable for all audio devices with 3.5mm jack such as MP3/MP4/MP5/CD etc. Suitable for all kinds of mobile phones. Ideal for car use.