Feature Benefit SoundTracker® Dramatically improves the sound quality of the transmission and reception of CB signals. All 10 NOAA/Weather Channels Instant access to national all hazards and weather information, 24 hours a day. Speaker Microphone Jack Allows connection of hands-free accessories. (Single pin connection) Magnet Mount Mobile Antenna (included) Allows mobile operation from a car. New Compact Design Allows maximum portability and comfort. 40 CB Channels Full coverage in an ulta-small package. 4 Watts Power Output The maximum allowed by law. High/Low Power Switch Reduces power consumption by up to 75% to extend battery life. Recharging Jack Allows charging of Ni-Cad batteries in unit with AC wall charger (not included). DC Power Cord (included) For in-vehicle use...plugs into vehicle's cigarette lighter. High Efficiency Flexible Antenna Provides maximum range and bends without breaking. Omni-Directional Microphone Allows voice to be picked up from multiple directions. Up to 4 Mile Range Range will vary between 1/2 and 4 miles depending on geographic terrain. Low Battery Indicator Special LED illuminates to let you know when batteries are getting low.