Skque FM Transmitter with USB Car Charger Black FM transmitter powered by any vehicle cigarette lighter adapter. No battery needed This FM Transmitter is the perfect way to get sound from your iPod, PSP, PDA, MP3 or CD player into your car stereo This device transmits stereo audio from your portable music player directly to your car's radio or home stereo through your FM radio Just tune your car radio into 107.7 FM channel and you'll hear your music player playing in stereo on the radio speakers Note: Vehicle cigarette lighter adapter charges FM transmitter only, not the MP3/CD player