1. High quality and easy to carry: Our emergency survival whistle is made of highquality ABS material, which contributes to its high durability, drop resistance and scratch resistance while making it light enough to carry with a lanyard comes with the whistle and can be tied to backpack, neck or belt. 2. Extraordinary functionality: the 7in1 survival whistle contains 7 useful functions, including emergency whistle, compass, LED light, magnifying glass, reflective mirror, LED signal light, lanyard and a sealed storage compartment for important personal information such as blood type, full name or emergency number. 3. Practical survival whistle: whistle with survival mirror and high white LED torch. In case you cannot use the whistle, use the principle of sunlight reflection to search for rescuers to explain their current position. Under the premise of no light in the field, the emergency lighting system and the LED lamp life of 10,000 hours. 4. High decibel: standard survival whistle with high decibel, powerful highfrequency sound generator, can deliver up to 120 decibels of sound, enough to be heard from a distance of one mile. In an emergency, you and your whistle will be easily recognized.