This is the radio scanner with up to 500 channels for listening to emergency and police broadcasts. The channels are organized over 10 banks, allowing you to quickly access police, fire/EMS, aircraft, HAM radio, weather spotter, and marine broadcasts. A favorite channel can be selected as a priority frequency and the scanner automatically checks the channel every two seconds, increasing the chances of catching activity. It receives NOAA (National Oceanic and Atmospheric Administration) alerts and provides access to business and industrial radio and utilities. The clock radio stores up to 20 FM stations and allows you to wake to your favorite radio morning show, a scanner frequency, or a weather channel. The device scans up to 90 channels per second, it has a backlit LCD, and large, ergonomic buttons and dials for quickly accessing channels. Powered by AC adapter or three AA batteries (required). 8 1/4" L x 6" W x 3" H. (1 1/2 lbs.)