The As Seen on TV Jupiter Jack™ turns any car radio into a hands-free cell phone! Revolutionary hands free cell phone accessory uses your car's FM radio to transmit sound through your car radio speakers so you can talk and drive at the same time - safely and legally. No need for costly ear pieces - just plug into the headphone jack, tune in your car radio and start talking. No wires and hands-free! Works with any cell phone and car. The As Seen on TV Jupiter Jack™ is a compact and portable car radio cell phone device.