Rescue Howler Whistle - 2 PackThe Slim Rescue Howler weighs only a few grams but it packs a big punch - namely, a 100dB signal that is audible from over a mile away. The pea-less design means this whistle works in all conditions and will never jam or freeze.Features: 100dB whistle signal is audible over one mile Pea-less design works in all conditions - won&';t freeze or stick The ultra-portable design weighs only a few grams and fits in any pocket *Sold as an Individual