Pocket Thunderstorm Detector
This excellent device shows alerts you to thunderstorms and cloud to ground lightning up to 75 miles away. It also gives you ETA of the storms arrival. Very handy if you work in the field or golf, camp out - really any outdoor activity.
The detector uses a highly-sensitive ferrite antenna that detects the low-frequency radio signals, or sferics, emitted by lightning as they travel through the earths ionosphere. Its built-in microprocessor and software analyzes the waveform and voltage the antenna detects to tell you how far away a lightning strike was, which indicates the presence of approaching storm cells and squall lines, and provides you with storm approach speed, estimated time of arrival, distance, and more.
While not cheap - $429.95 - it might just be a lifesaver, so you can’t really put a price on that.
You can find it HERE

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