7 in 1 Whistle Kit: The package comes with 1 piece child survival kit, but it has multiple functions such as emergency whistle, compass, LED, magnifying glass, reflectors, thermometer and storage case for Meet Your Different Needs > Reliable Quality: This survival whistle is made of high quality ABS, which can withstand high temperatures and won't break or deform easily. Just twist the whistle body, it will be disassembled into 3 parts Lighting Function: This compass whistle supports LED lights, which can emit light rays in the dark; So you can relax and enjoy your camping or hiking without losing track of your way Store Items with Other Useful Features: Our camping whistle can also store important items like your ID card, your name tag, your glucose and more. so that rescuers can immediately collect important information about you; Designed with a lanyard, you can wear it around your neck, convenient and practical Friendly Tips: Due to the environment and other factors, the measurement of our survival whistle may have a little error, which is basically within the normal range.