All in one digital FM transmitter and charger plays iPod tunes through car's FM radio. Simultaneously charges iPod using the car's DC power source (cigarette outlet). Transmits iPod tunes through any available FM radio frequency. Simple up/down button speeds frequency selection and three programmable buttons lock in station presets. Patented Aerielle wireless technology enhances noise reduction and stereo separation. Safety fuse protects iPod from power spikes. For iPod or iPod mini with dock connector.