7 in 1whistle outdoor survival supplies

Multifunctional outdoor survival supplies seven-in-one whistle, functions include: standard high-decibel survival whistle, north (south) needle, high-precision thermometer, survival mirror, tinder magnifying glass, high-white light LED flashlight, storage tank; whistle equipped with high-precision Compass and thermometer, you can grasp the current temperature and direction for the first time; when there is no fire in the field, you can use the fire magnifier attached to the life-saving whistle to refract the sunlight to the leaves on the dead grass to make a fire