Emergency Survival Whistle 3 in 1 with Compass and Thermometer, Loud Safety Whistle with Lanyard for Outdoor Hiking

3 in 1 emergency whistle with compass and thermometer. Loud 120dB sound carries far distance. Comes with lanyard for backpack or belt attachment. Durable ABS construction, suitable for camping, hiking, cycling, skiing, and water sports. The pea inside may freeze in extreme cold spray with dry silicone to prevent.