Hearing is believing! You Do not need a bulky whistle to make a loud blast and this little device proves it! Survival, Inc.'s acoustic experts have designed a unique whistle that focuses man-made air streams through harmonically tuned chambers to create a piercing shriek that out-screams any other noise. So whether you're hailing a cab over city traffic or signaling for rescue in deep woods, our JetScream Whistle will do the trick.

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