This multi-functional outdoor survival whistle has 8 uses:
1, standard military regulations high decibel survival whistle
2、North pointing (south) needle
3、Thermometer
4、Survival reflective signal mirror
(Using the principle of sunlight reflection to come forward to search for rescue personnel to explain their current location)
5, kindling magnifying glass
6, white LED flashlight
(LED bulb life 10000 hours)
7, sealed warehouse
(Before traveling can be placed inside their own life preservers: write your name, address, phone number, blood type, etc. in order to rescue personnel on your situation for the first time to grasp)
8、Nylon lanyard
(More convenient to carry around)