Enjoy instant weather reports and directions at your fingertips with the Therm-o-compass! Bright neon color options. Attaches to your coat, pack, keychain, or wherever else you need it. Luminous compass allows you to determine direction even in low-light conditions. Reads down to -20º Fahrenheit and -30º  Celsius and includes a wind chill chart. Solid brass split ring won’t affect compass reading.