Check the listing for details. Ozark Trail 4 Function Whistle Compass Magnifier Thermometer Outdoor Equipment. Color: Black, Condition: New other (see details). Listed at 3.00 USD. New without original packaging. Ozark Trail Four Function Camping Emergency Whistle Compass Thermometer Magnifier. Multi-Functionality: Includes thermometer, magnifier, compass, and whistle for versatile use. Compact Design: Small size allows easy portability in your pocket, backpack, or other storage. Emergency Preparedness: Ideal for outdoor adventures, helping you stay prepared in emergencies. Temperature Monitoring: Thermometer reads between -20 to 120 degrees for year-round use. Enhanced Visibility: Magnifier helps examine objects closely and can assist in starting a fire. Directional Guidance: Compass helps you understand your surroundings and navigate effectively. Location Signaling: Whistle aids in alerting others to your location when needed.