Scanner rapidly searches preset frequencies and stops on active ones ' When you hear something interesting, you can easily store that frequency for later monitoring or scanning ' Lockouts let you skip undesired frequencies as you search or scan ' Weather alert sounds an alarm when the local weather station issues a warning ' Display backlight ' Key tone on/off ' Computer programmable* ' Includes VHF Lo/Hi UHF & VHF-Air bands ' Frequency Coverage: 29-54, 108-174, 380-512MHz ' Power: Requires 4 'AA' alkaline or Ni-Cd batteries or adapter: AC #273-1767/C or DC #273-1810/C ' Jacks: earphone, antenna (BNC), external power/charge ' Size: (less antenna) 5-11/16×2-3/8×1-3/8"