Quality: This camping survival whistle is made of high quality ABS, military green, lightweight and practical, cylindrical design, which can withstand high temperatures and is not easy to break or deform. Just twist the body of the whistle, it will disassemble into 3 parts. 7 In 1 Emergency Whistle: This emergency whistle has multiple functions such as whistle, compass, LED, magnifying glass, reflectors, thermometer and storage case. These features are very useful for your outdoor adventure. Multi-Function: This whistle is compatible with LED lights, which can emit light rays in the dark; in case of need, the whistle can help to call for help. If you get lost, the compass can guide you; Can also store important items such as your ID card, name tag, glucose, etc., so that rescuers can immediately capture important information about you. Portable And Compact Whistle: With a lanyard, you can hang the whistle around your neck, carry it in your hand or clip it to your backpack. They can use it when they need. Wide Range of Uses: Applicable to outdoor sports, ideal for camping, hiking, hunting, boating, fishing, outdoor activities. They are necessary tools for survival.