2 PAIR COBRA CXR725 22 Channel FRS/GMRS Walkie Talkie 2-Way Radios + 4 Headsets UHF/FM: Ultra clear long distance reception. Up to 27 Mile Range: Extended range capacity provides up to 27 mile range. (Range will vary depending on terrain and conditions.) Selectable Power Output: Choose between High Power to maximize range or Low Power to conserve battery life (in GMRS). 3124 Channel Combinations: Available when the 22 channels are combined with the 142 privacy codes (38 CTCSS/104 DCS), these combinations prevent interference from other radios. VOX: The user's voice is detected and the radio transmits without the need to press any buttons, freeing hands for other tasks. 5 VOX sensitivity levels allow the user to select at which point the radio will detect their voice.