SOL Compact Emergency Rescue Signal Whistles - Slim Howler
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. SOL survival gear by AMK.
Weight: .125 oz
Size: .875" x 2.25" x .3125"