The 40-Channel CB Radio by RoadKing(R) is made from high-grade materials to meet the strictest standards of high quality. Designed to ensure superior reliability it provides long lasting, trouble-free service. With Full 4 Watts AM RF power output (Maximum FCC Allowable) it has a Front Panel 4-pin mic connector and dynamic mic with 9' cord and RF gain control and PA capability. Hi-cut removes high frequencies to improve audio quality with SWR calibration of antenna system for maximum performance. Antenna warning indicator and receive/transmit indicator with automatic noise limiter reduces vehicle interference. SWR/RF illuminated meter and large digital display and switchable ANL and noise blanker.