The Midland WR-300 23 Code S.A.M.E. Weather Alert Radio offers S.A.M.E. technology (Specific Area Message Encoding), which pre-programs the device to receive only those warnings that apply to your local area. You can choose state, county, and/or nearby counties. The single-speaker radio offers 23 programmable county codes, AM/FM tuning, date, time, alarm functions, and automatically switches from AM/FM to pertinent all-hazard alerts. For tuning, the radio employs drift-free PLL (phase-lock loop) technology and an easy-to-read blue, backlit LCD. You get a convenient, 10-alert memory, and you can add, edit, and remove unwanted alerts at any time. The radio uses the supplied AC power adapter or four AA Batteries (not included).1-Year Limited Warranty.