BestBuyGoods 5Pcs Multi-function 7-in-1 Outdoor Training Safety Help Whistle With Compass--LED Flashlight--Survival information Seal Box--Fire Magnifier--Survivor Signal Mirror Reflector--Thermometer with Nylon Lanyard for Camping Backpacking Fishing Skating Boats Raft Marine Wild Living Survival Emergency Color Army Green The standard military high-pitched survival whistle-------Internal sound-box patent design makes further and more shrill whistle. Clear,high accuracy Compass!High precision thermometer! Perfect survival signal mirror reflector and Fire magnifier. Backup high light LED flashlight and your information sealed chamber. Sometimes,a small tools means life-saving!Please prepare one in car or your backpack for emergency use.