Emergency whistle with lanyard, 3-in-1 safety sharp loud with compass and thermometer, for Camping hiking hunting for rescueFeature:Easy to hear-3 pcs. Super loud survival whistles can provide up to 120 decibels of guaranteed sound, you can hear it from afar and play your part in an emergency. Not only the 3-in-1 multi-function whistle, in addition to the emergency whistle, it is also a compass and thermometer, bring you the necessary information when you are doing outdoor sports. Sturdy and Durable--Made of heavy-duty ABS, waterproof and durable, easily inflatable. Unlike metal whistles, you can touch freely at very low or high temperatures. Compact and Highly Portable-Less than 0.6oz, don't weigh down your outdoor sports, with the neck lanyard, it's easy to get in any situation, it can also be tied to a backpack, belt and so on. Multi-uses-loud safety whistle for camping, hiking, cycling, skiing, all kinds of outdoor activities, and can also be for coaches, instructors, sports, teachers, lifeguards, security, self-defense. Feature:1. Whistle (with nuclear design, greatly increase the brightness of the whistle, nylon lanyard)2. Compass (north/south)3. Thermometer (to know about the ambient temperature)4. Note: The compass and thermometer are both decorative and the effect is average. If the requirements are too high, please consider before ordering! ! ! Specification: