Don't get caught unprepared - 4-in-1 whistle is a must-have for any outdoor adventure! Lightweight and compact design makes it easy to carry with you wherever you go. With a built-in compass, magnifier, and whistle, you'll have everything you need in case of an emergency. The included lanyard ensures that you won't lose your whistle when you need it most. Makes a great gift for anyone who loves the outdoors - they'll thank you for keeping them safe! Necessary for Outdoor SurvivalThis outdoor survival whistle is easy to blow, with strong penetrating power and high decibel rate. LED lights are emergency lighting equipment with long service life under the premise that there is no light on site. Our camping post can also store important items such as your ID card, name tag, glucose, etc., and rescuers can immediately grasp your important information; the design has Lanyard, can be hung around the neck, convenient and practical.