General Spec Screen LCD display with blue background lighting FM Frequency full frequency stereo Function ideal for charging for your iPod Compatibility iPhone 3G, iPhone, all iPod models Features Soft- touch buttons' deesign. High fidelity, stereo, share high definition music and conversation effects. Digital PLL, full frequency stereo and avoid interference effectively. Memorize uo to 4 fm frequencies, and automatic last used frequency memory. Hands free talk via high quality bulit-in stereo microphone and the car stereo. Bulit in lithium battery, no need iphone's power. Let you listen to high quality mobile phone's music on car stereo.