DOUBLE TUBES: This emergency whistle is double tubes designed, double indemnity for the use. You can use it even the water comes or in any environment.
HIGH DECIBEL: The survival whistle's maximum sound intensity of up to 150 db, make sure that you can be heard from a long distance to protect you safe.
EASY TO CARRY: This whistle is small and it won't take much space, you can put it in your pocket. And with the hang buckles and chain belt, it will not be easily lost.
DURABLE & SAFE: Made of high qulaity stainless steel, of food grade, Safty confirmed. It won't do harm to your health. And the high quality material makes it durable, you can use it for a long time.
SIZE & PACK: Length-5.5cm(2.2inch), Width-1.8cm(0.6inch), Thickness-0.7cm(0.3inch). 2 pack of black and gray.