Marathon CL030056BK Jumbo Atomic Wall Clock with Date, Indoor Temperature and Humidity-Batteries Included. (Black) JUMBO DISPLAY - LCD display features 5-inch digits for easy viewing SELF-SETTING/ADJUSTING - Using radio frequencies broadcast from NIST's Colorado Atomic Clock. The atomic signals can be switched on/off manually too. MULTIPLE DISPLAY MODES - 12 or 24 Hour Display Formats with Humidity and Indoor Temperature Display in Celsius or Fahrenheit MULTIPLE LANGUAGES - Day of the week can be display in 7 languages (English, Russian, Dutch, French, German, Italian & Spanish) MULTIPLE TIME ZONES: You can easily switch between 6 time zones (Pacific, Mountain, Central, Eastern, Atlantic & Newfoundland)