Stay safe and prepared with the Coghlans 4-Function Whistle. This handy tool combines four essential functions into one compact design. With a whistle for signaling in emergencies, a magnifier for reading small print or starting a fire, a thermometer for monitoring the temperature, and a compass for navigation, this whistle is a must-have for any outdoor adventurer or emergency kit. The durable construction and convenient lanyard make it easy to carry and keep within reach at all times. Be ready for anything with the Coghlans 4-Function Whistle.