Fox 40 Sonik Blast CMG Referee Whistle with Fingergrip

W501FMG Fox 40 Sonik Blast CMG Referee Whistle with Fingergrip

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Superior performance combined with superior comfort! The premium Sonik Blast CMG Pealess Referee Whistle from Fox 40 provides additional comfort for holding the whistle in the mouth. Distinct louder pitched whistle provides a more powerful sound, without a lot of effort, which is easily heard over the crowds. Ideal for large outdoor arenas with large crowds and ambient noise. The CMG is perfect to reliably hold the whistle in mouth or fingers in wet conditions.


  • Design: 2-chamber/4 resonators; pealess
  • Sound power: exceeds 120 dB

Product Video

Hear Fox 40 Sonik Blast CMG Referee Whistle in Action

Fox 40 blows the Sonik Blast CMG Referee whistle


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Official Reviews


Steve S.

Jacksonville, FL

October 21, 2021
Love this whistle. Fits perfectly on my fingers. I certainly recommend this for newer officials to have a nice strong whistle without having to think about it and to avoid inadvertent whistles.

Mike P.

Miami, FL

June 3, 2019
Solid product. Gets the job done on the field!

Robert M.

Everett, WA

October 7, 2018
This whistle is LOUD. Unlike the classic Fox 40, the sound comes out both above and below where you blow. Because of this, the sound comes back to your ears. I find I do not blow this whistle as loud or I get a ringing in my ears. I went back the classic.

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