ClearFM&trade; 0.5W Long Range Fm Transmitter - CZH-05B - WITH NEW HI (0.5W) LO (0.1W) Advanced Phase Lock Loop (PLL) System and Clear Stereo Sound Adjust frequencies with the touch of a button from 88.0 MHz to 108.0 MHz Robust and durable perfected design BNC Antenna Connector for Interchangeability or Easy Upgrading Dual Mode Power Output - 0.5 W (High Mode) or 0.1 W (Low Mode) for Ideal Range Setting