The 7-in-1 Safety Whistle sets 7 functions including Emergency Whistle, Compass, Thermometer, LED Signal Light, Magnifying Glass, Reflector and Sealed Warehouse with good playability (The uniquely designed miniature built-in storage bin can be used to store important personal information, allowing rescuers to grasp your situation at the first time) (NOTE: If you need help in an emergency, you can try whistling softly, which is louder than whistling at full force) Anybody interested in adventures, hiking trips or camping events needs this 7-in-1 outdoor multifunctional safety whistle as birthdays best gifts for men, husband dad or boy scouts friends and preparation for the next Boy Scout March and improve outdoor skills Emergency Whistle is made of ABS high strength, fall resistance and high temperature engineering material, lightweight and fail-safe nice whistle works well in any conditions with excellent airflow design. This survival whistle comes with a long enough lanyard, which can be tied to your backpack, belt or neckSentence 4. Whistles with lanyard to carry for life safety, cycling, skiing, camping, hiking, jogging, backpacking, hunting, archery, fishing, swimming, boating, kayaking, marine sporting events any kind of outdoor activities