Military-grade illumination for roadside emergencies, search-and-rescue missions and more. These lightweight, easy-to-use Cyalume® S.O.S. Signal Sticks are a must-have for emergency situations where lighting is limited. Signal Sticks are safe to use around children and pets, and each Stick provides up to 8 hours of bright illumination. For extreme emergencies, swing the Signal Light above your head to create a 4' lighted circle that can be seen up to 1 mile on land and 3 miles from the air.