The HyperWhistle Review

Check out this official video here: • HyperWhistle WORLD's L...

[@adlertithonus222]

How could this possibly work underwater? Explain the acoustics of that.

[@2kBerlin]

I have one I used it underwater and it failed it is also not the world's loudest. Fox 40 blast is way louder.

[@Sirrynoz]

1m distance, flat or C weighted Bruel & kjaer NIST certified meter, measured in LCpk

[@peterjoy931]

3D print your own.

[@johntheux9238]

142dB at what distance???

[@nthomas87]

John theux at about the same distance most dB measurements are made - about 12 inches.

[@esqueue]

The owners youtube tested it on video. He nearly hit the meter with the whistle to get his rating.

[@patron40silver]

1/4 inch

[@DrJosh2]

Whistle at ~ 1:00.