2 of 3 people found the following review helpful
Not very loud,
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This review is from: Ultimate Survival Technologies JetScream Whistle (Black) (Sports)
I don't understand all the comments and reviews re the volume of this whistle. I purchased two of them for placement in inflatable PFD's that I use. I wanted a low profile and volume. I was disappointed when I tried the whistles, they are not particularly loud. They are well built, fit my low profile requirement and are easily attached to a vest/key chain. In fact I will praise the thought and effort in the design with two attachment options. However this is not as loud as the barrel type whistle with the ball inside.