Loud and high volume: Just blow gently with your mouth and your voice can make a loud whistle with emergency whistle. In the event of an emergency outdoors, you can call your attention by blowing a whistle.<br /> Portable and compact whistle: With the lanyard, you can hang the whistle around your neck, wear it on your hand, or hang it on your backpack. You can use it when you need it.<br /> Multi-functional emergency whistle: The outdoor whistle consists of 7 small parts, including whistle, magnifying glass, light, compass, thermometer, reflector, sealing tube, these functions help you in your outdoor adventures.<br /> Multi-functional emergency whistle: The outdoor whistle consists of 7 small parts, including whistle, magnifying glass, light, compass, thermometer, reflector, sealing tube, these functions help you in your outdoor adventures.<br /> Handy Survival Whistle: The 7 widgets of the whistle are detachable. Whether you need a whistle or other small parts, you can use it quickly and easily.