Coghlan's Four Function Whistle Equips adventurers with everything they need to explore the outdoors A spring-loaded clip lets hikers attach the Four Function Whistle directly to their belt, lanyard or backpack.Key Features: Whistle. Thermometer. Magnifier. Compass. Spring-loaded clip for attachment to belt or lanyard. Includes a whistle, 2-scale thermometer, magnifier and compass and a metal spring-loaded clip for attachment to belt, lanyard, etc. Team Sports First Aid Kit -