Lightning can strike out of a clear blue sky with no visual or audible warning. That’s because the warnings can be too far away to be seen or heard. Trees, hills and mountainous terrain can block the sound of thunder and cloud-cover can hide approaching storm activity. Thunder can only be heard up to 4 miles away. However, lightning can strike from 10 miles away. When you hear thunder, lightning has already happened and you are within the "deadly" range. Believing that you can count the seconds between the lightning stroke and thunder is one of the most dangerous mistakes cyclists make. A cyclist should never take a chance, believing that what you can’t see or hear won’t hurt you!

ThunderBolt technology is here and already in use by government, military, utilities, schools, universities and sports enthusiasts. ThunderBolt Storm Detector is a cyclist’s dream come true. 21st century technology that is a self-contained, personal weather warning system... not a weather radio. ThunderBolt will tell you how far away the storm is, and how much time you have to get to safety long before you see dark clouds, or hear a rumble in the distance. And before you are within the striking range of lightning. ThunderBolt technology. The intelligence to detect storms from 75 miles away, and track them all the way to you. 50 LCD screen messages with real-time information from ETA to time to clear. And, most importantly, it gives you the time you need to reach safe haven.