The Coghlan’s Thermometer Key Ring is a practical and useful accessory for outdoor enthusiasts. This key ring thermometer displays temperature in both Fahrenheit and Celsius and can be easily attached to your backpack or keychain. The lightweight design makes it easy to carry with you wherever you go. With a range of -20 to 120 degrees Fahrenheit and a wind-chill chart on the back, you’ll always be able to keep track of the temperature, no matter where your adventures take you.Celsius and FahrenheitLightweight and portableKeychain for easy attachment