- For universal radio transmission from signal sources with a 3.5 mm jack connection like an MP3 player, smartphone, tablet PC to any car radio ,- Signals are transmitted via radio to the selected FM frequency of the car radio ,- Auto scan function: the device searches the best possible, free FM frequency ,- 3 station memories for preset frequencies ,- Type of modulation: FM ,- Power supply via integrated cigarette lighter plug ,- Additional USB socket with 1A for charging MP3 players and smartphones - Power Supply: Car Charger ,- Frequency Range: 88.1 MHz - 107.9 MHz ,- Colour: Black ,- Suitable for: /MP3 Player 2 years legal warranty only