7in1 Emergency Survival Function Whistle Outdoor Multifunctional Survival Whistle with Lanyard Compass Flashlight Camping Hike

Function introduction:1. Standard high decibel survival whistle2. Pointing North (South) Needle(Highly accurate and clear at a glance)3. High thermometer(Faster and more accurate time to grasp the current temperature)4. Survival reflective signal mirror(Using the principle of sunlight reflection to search for and rescue personnel, explain their current location)5. Spark magnifying glassIn the absence of a spark in the wild, the principle of sunlight focusing on a magnifying glass can be used to refract sunlight onto dry grass and leaves, creating a spark.6. High white LED flashlight(Emergency lighting systems and LED bulbs with a lifespan of 10000 hours without bright light in the wild)7. Storage tank(Before traveling, you can place your own lifebuoy inside: write your name, address, phone number, blood type, etc. so that rescue personnel can grasp your situation in time.)