Uniden Handheld Public Safety Scanner, Monitor Police & Fire Departments, Including Rescue & Paramedics, NOAA Weather Transmissions, Business/Industrial Radio, Utilities, Marine & Amateur, Ham Radio, Bands, & Air Band Transmissions, Close Call Capture Technology Instantly Tunes To Signals From Nearby Transmitters To Help You Detect & Identify Local Signals, & A Comprehensive Memory That Holds Up To 300 Programmed Channels, Li-On Battery, Included.