SLIM Rescue Howler Whistle (4 Pack)The 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 Measures 1"L x ⅜"W x 2½"H. Weighs .08 lbs. 4 whistles total.
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