1pc Olive Green 3-In-1 Emergency Survival Whistle With Compass, Thermometer And Lanyard Multifunctional Outdoor Gear, Compact Lightweight Design, Suitable For Camping, Hiking, Outdoor Activities, Trekking, Emergency Kits, First Aid, Referee, Cheerleading, Basketball, Football, Rugby, Sports, Dog Training, Camping Accessories, Emergency Equipment, Emits Loud Clear Sound Outdoors!