Ultimate Survival Technologies Jetscream Whistle
This variant is currently sold out
You can hear JetScream's amazing 122Db ear-piercing shriek above most natural or man-made noises. Great to use in the city or woods for communication and personal protection. You don't need a big bulky whistle to make a loud blast and this sleek little device proves it. The pea-less design prevents freezing or clogging. Great for everyday carry, or as an addition to an emergency kit.