THE ORIGINAL - The Sun Company TripleWhistle is the original 3-in-1 compass/thermometer/whistle, designed and final-assembled in the USA. LUMINOUS COMPASS - 20mm Grade A liquid-filled compass is luminous so it can be easily read in low-light conditions. JAPANESE DIAL THERMOMETER -Features an extremely accurate 20mm liquid-damped Grade AA dial thermometer that reads down to a chilly -20 degrees Fahrenheit. SAFETY ORANGE COLOR - High-visibility safety whistle ensures you are both seen and heard. Essential for survival situations. LANYARD - Wear TripleWhistle around your neck or easily attach to your pack or parka. "Three essential outdoor aids in one: Whistle, compass (liquid filled, luminous) and thermometer (liquid damped). Includes 17″ long black nylon lanyard. Designed and final assembled in USA. Safety orange color makes it easy to locate. Reads down to -20 F or -20 C."