PRO501HH Handheld CB RadioThe Uniden PRO501HH has all the features users need. 40 CB channels let the user tune in to the action channels. NOAA weather alerts keep users informed of severe weather conditions, and the Dual Watch feature lets users talk on one channel while listening in on another.Use the high-power setting to send out the strongest signal, or switch to low-power to preserve batteries. There is also a backlight on/off switch and a key lock feature. Add to that squelch control and automatic noise limiter, and users have a reliable handheld CB radio that provides crisp, clear communication.40-Channel OperationEnjoy the complete range of 40 CB radio channels to communicate with those around the user. The backlit display is easy to read, even in low-light conditions.NOAA Weather AlertsAlerts the user to severe conditions in the immediate area in the event of a NOAA weather or emergency alert.Automatic Noise LimiterFor reduced external noise.Instant Channel 9/19Quickly set the radio to emergency channels 9 and 19.Automatic Gain ControlFor a constant sound level.Features: Squelch control Signal/RF indicator NOAA weather alerts Portable handheld design Channel scan Superheterodyne circuit Instant channel 9/19 Dual watch In the Box: PRO501HH CB Radio Antenna DC power cable Belt clip Quick Guide (pdf)Owner&';s Manual (pdf)