Feature●Made of TC4 titanium alloy, it is durable and corrosion resistant, non-toxic and beautiful●Size: 2.0 x 0.3 x 0.3 inches (52 x 7 x 7 mm); Weight: 0.1 oz (4.7 g), making it extremely lightweight and portable●Sound Size: Up to 120 dB●Accessories: Key chain●Country of Origin: ChinaDescription NITECORE NWS10 Titanium Whistle [HDS] [Parallel Import Product]