EF0041B Features High fidelity and full frequency Stereo sound Digital PLl Powered directly via iPad/ iPhone No extra power needed Low current and low power consumption With a car charger Supports remote operation General Specs Type FM car transmitter Frequency Range 88.1-107.9 MMHz Sound Stereo sound Screen LCD blue backlit screen  Compatibility Suitable for iPhone 3GS， iPhone 4G， iPhone 4S and iPod series Package Details Weight: 88.81 g Size: 21.3*14.5*2.5 cm Package Includes * FM Car Transmitter