BE HEARD: 110dB signal is audible over 1 mile.
DURABLE: Made from unbreakable ABS plastic.
FAIL-SAFE: Pea-less design works in all conditions - won't freeze or stick to lips when cold.
INTENSE SOUND: Triple-frequency sound cuts through surrounding noise.
SMALL AND PORTABLE: Can easily fit around your neck or in your pocket for hiking and other outdoor activities.