An audible alarm sounds and a corresponding LED light illuminates accordingly, as lightning strikes at distances of within 6 miles, 6-12 miles, 12-24 miles and 24-40 miles.

Indicates if lightning strikes are approaching or moving away.
• Small and impact resistant, clips to your belt, backpack or golf bag.
• Low power consumption, up to 100 hours with a single AA battery.
• Easy to use, simply flip a switch to check lightning strike distance, track storm direction or view battery life.