SURVIVAL ESSENTIAL: Whistle with compass and high-precision thermometer, can grasp the current temperature and direction at the first time; when there is no fire in the wild, you can use the fire magnifying glass attached to the survival whistle to refract sunlight onto the dead grass and leaves to generate fire LIGHT SIGNAL: Safety whistle with survival mirror and high white LED flashlight. In the case where you can't use the whistle, use the principle of sunlight reflection to search for rescue personnel to explain their current position. Under the premise of no light in the field, the emergency lighting system and the LED bulb life of 10,000 hours SUPER LOUD: High-decibel standard survival whistle, high-frequency powerful sounder, can provide up to 120dcibels of sound, enough to be heard one kilometer away, in an emergency, you and your whistle will be easily detected High quality: The emergency whistle is made of high-strength ABS, drop-resistant and high-temperature engineering material, light and stylish with excellent airflow design. It comes with a rope, so you can tie it around your backpack, belt or neck.STORAGE TANK: You can put your own lifesaving tape in it before traveling: write your name, address, phone number, blood type, etc. so that rescuers can grasp your situation at the first time Specification: Color: Black Size: 10.8*4.5*2.5cm/4.2*1.8*1in Weight: 45g/0.1lb Material: High temperature resistant ABS material Functions: Whistle, Compass, Thermometer, Magnifying Glass, Reflector, LED Light, Storage Compartment