Extended range capability provides up to 20 mile range. (Range will vary depending on terrain and conditions.).Available when the 22 channels are combined with the 121 privacy codes (38 CTCSS/83 DCS), these combinations prevent interference from other radios..Be prepared for storms and emergencies with the built-in NOAA radio receiver providing coverage of all government operated weather channels..In the event of a major storm or other weather condition, NOAA broadcasts a 1050 Hz tone that this microTALK radio can detect and warn you of a weather alert condition..The user's voice is detected and the radio transmits without the need to press any buttons, freeing hands for other tasks. Five VOX sensitivity levels allow the user to select at which point the radio will detect their voice. Up to 20 mile range; Provides extended signal range with 2662 channel combinations. NOAA weather and emergency radio and weather alert; Be prepared for storms and emergencies with built-in NOAA radio receiver. VOX Voice-activated transmission frees hands for other tasks. Call Alert with 5 selectable tones distinguishes between different parties on oncoming calls. Wall charger & rechargeable NiMH batteries included; May also be used with AAA alkaline batteries.