Never be without power again with “180W 4 in 1 DC to AC inverter”. Instantly convert your DC power source into AC power, so you can charge and power your electronic devices in the car. This inverter also comes with USB, cigar lighter receptacle, and FM transmitter. USB ports: provide power to Apple and Sony MP3 player instantly. Cigar lighter receptacle: provide DC 12V power source to all portable electronic devices. FM transmitter: help you to play the music from MP3 players through car FM radio system.