TeckNet&Acirc; MT-095 3.5mm Universal FM Transmitter With Build in Rechargeable Battery + 2.1A Multi Car Charger - Black LCD display with blue background light. Build in Rechargeable Battery - No need for extra power supply, just plug it to the 3.5mm earphone socket and play. Stream music from any 3.5mm music player to your home or car stereos. Transmits on FM channels 88.1 MHz - 107.9 MHz, 0.1Mhz/step Simple to use two button controls Includes 2.1A car charger for operate and charge the FM Transmitter Compatible with Apple iPhone, iPod, iPad, and any of those music players with 3.5mm earphone stocket.