All that design is moot if the whistle can’t toot with the best of them. Powerful enough to bring down the walls of Jericho, the unique three flute design puts out three discrete frequencies, each optimized to cut through any surrounding noise pollution. For a final touch, the low volume profile limits air flow and reduces the amount of exhalation required to give off a signal. Resistant to the world, powerful enough to reach help, and mercifully simple to operate, the Cybernetic Tactical Whistle is just about the smallest device that could save your life.