We Knife Whistle Green Titanium with Brown Paracord (A-05CP)
Whistle, Green Titanium made of durable anodized green titanium. Signal whistle, which will never let you down like other whistles do. It emits sound levels as high as 120 decibels, and since it weighs only a few grams, it is a perfect addition to a key ring or emergency kit.
Elaboration: the company Sharg®