Material: ABS high strength anti-drop high temperature engineering material.Ideal for outdoor sports camping, hiking, etc.Standard regulations high-decibel to find out the whistle (patented design of the sound of the warehouse makes the whistle farther and more harsh).Refers to the North (South) needle (high accuracy, clear at a glance).High precision thermometer (faster and more accurate the first time to grasp the current temperature).Survival Reflectance Signal Mirror (using the principle of sun reflection to find the rescue of the staff to explain their current location).Fire magnifying glassHigh white LED flashlight (in the field without light under the premise of emergency use of the lighting , LED light bulb life of 10,000 hours)Sealed warehouse (in the trip before you can place their own lifeblood: write their own name, address, telephone, blood type, etc. in order to rescue your staff for the first time to master th