... full frequency(88.1-107.9MHz) 2 with Charging socket on bottom 3 work for iPhone 4S ... 1MHz ~ 107.9MHz,0.1MHz/step3. LCD display with blue back-lit4. Memorizes up to 4 frequencies5. Draws ... power from iPhone or iPod,no batteries required6. With charging socket at the bottom7. The width and ... FCC, RoHS approvel9. Available Color: Black, White, Silver Compatible with:Work for all iPhone 4S&3GS,3G,iPhone,all ...