7-In-1 Multifunctional Outdoor Survival Whistle, Compass, Thermometer, LED Refle
The lanyard and light weight make it easy and safe to carry while biking, skiing, camping, hiking, jogging, fishing, hunting, exploring, jungle trekking, swimming, or any other outdoor activities, and it can also be used for coaching, instructing, sports, teacher, lifeguard, protection, self-defense.