Fox 40 Electronic whistle Review - Sound graphs - In a stadium

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See this whistle vs 15 other whistles here:    • Referee Whistle Test - 16 whistles - All p...  
How to blow a whistle correctly:    • How to Blow into a Whistle Correctly - Sha...  

The Fox 40 Electronic whistle is a good product for managers, coaches, teachers or kids matches. I find it to be way too quiet for a real match though.

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0:00 - Review
0:30 - Close distance
1:08 - Medium distance
1:18 - Long distance