This walkie talkie set features 50 GMRS (General Mobile Radio Service) channels. It also includes channel scan to check for activity. The JIS4 Waterproof Protection prevents splashing water from having any harmful effect on it (splash resistant).The walkie talkie set has longer range (36 miles) communication in open areas with little or no obstruction. Easy Voice and Sound Activation Transmission (eVOX) with 9 sensitivity levels for hands-free operation.142 CTCSS/DCS PRIVACY CODES - The privacy codes give you up to 3,124 channel options to block other conversations.NOAA WEATHER SCAN + ALERT - NOAA Weather Scan will automatically scan through 10 available weather (WX) band channels and locks onto the strongest weather channel to alert you of severe weather updates. NOAA Weather Alert will sound an alarm indicating that there is a risk of severe weather in your area.