Presenting the next generation of personal lightning detection. exclusive 360 detection in all directions.The first personal lightning detector with a graphical display that shows you the lightning strike distance (from 0-40 miles away) as well as a 1-hour storm trend and intensity.Visually see the lightning strike distance and the 1-hour storm trend.360 Lightning Detection: Unlike other lightning detectors, StrikeAlert HD tracks lightning in ALL directions ? there are no blind spots.An audible and/or vibrate warning alerts you before (and while) lightning is within striking distance.LED indicators light accordingly at lightning distances of 24-40 miles, 12-24 miles, 6-12 miles and within 6 miles.Low Power consumption: Up to 80 hours of operation with two AA batteries (included).