Unparalleled Versatility7-in-1 safety whistle set 7 functions, including emergency whistle, compass, thermometer, LED signal light, magnifying glass, reflective mirror and sealed warehouse, with good playability (can be used with uniquely designed miniature built-in The storage box stores important personal information, so that rescuers can grasp your situation at the first time) (Note: If you need help in an emergency, you can try to whistle softly, which is louder than whistling with all your strength) Perfect GiftAnyone interested in adventure, hiking or camping activities needs this 7-in-1 outdoor multifunctional safety whistle as a birthday gift for men, husband dad or scout friend, and for the next scout Parade Get Ready and Improve Outdoor Activities Skills HIGH QUALITY AND EASY TO CARRYEmergency whistle is made of ABS high-strength, drop-resistant and high-temperature-resistant engineering material, lightweight and fail-safe beautiful whistle works well in any conditions, with excellent airflow design.This survival whistle comes with a lanyard long enough to attach to your backpack, belt or neck WIDE USEWhistle with lanyard can be used for life safety, cycling, skiing, camping, hiking, jogging, backpacking, hunting, archery, fishing, swimming, boating, kayaking, sea sports and any other type of outdoor activities