Misc Compass/Thermometer. Keychain. 2 3/4 overall. Black plastic housing with keyring. Thermometer measures temperature in Fahrenheit or Celsius. Hang packaged. Made in China." Keychain. 2 3/4" overall. Black plastic housing with keyring. Thermometer measures temperature in Fahrenheit or Celsius. Hang packaged. Mfr Part Number: CS-177.