No camping equipment is as versatile as Highlander Ranger Compact Compass Thermometer & High Pitch Whistle. It comes in the form of a whistle with built-in compass. A thermometer is also provided for measuring temperature. You can wear it around your neck by using the neck cord and blow the loud high pitch whistle while in distress., Classic whistle shape with integrated buttin compass and thermometer., Loud high pitch whistle., Button compass and thermometer., Neck cord.