Ditch the hassle of burning through batteries with DLO's TransCast FM digital FM transmitter. Broadcast your music library over your car's existing stereo through an unused frequency anywhere on your FM dial - from 87.5MHz to 108MHz. Included charger arm connects to the back of TransCast FM, providing a constant supply of power from your 12v cigarette lighter receptacle, so you never run out of batteries. LCD display for easy tuning. 3-foot coiled cord plugs into your MP3 or portable CD player.