Used aswhistle light, compass survival kit, whistle flashlight, flashlight whistle,travel compass,multifunction whistle,magnifying glass survival,whistle with compass,waterproof storage container with lanyard,flashlight with storage,compass with mirror,compass whistleEmergency Survival WhistleBuilt-in whistle, flashlight, magnifying glass, sealed compartment, thermometer, mirror, compass, seven functions. Magnifying glass, in the case of no fire, can be focused.