Desk Table Digital Backlight LED Alarm Clock with Time & Date & Temperature & Humidity Display 1. Brand new and high quality. 2. Large LCD Digital Backlight Display, easy to read numbers and power saving 3. Time & Date & Temperature Display Functions: - Clock: hour, minute, There are a 12 hours system and a 24-hour system, which can switch between 12 hours and the 24 hours. 4. 3 sets alarm program with gradual BEEP sound. 5. 3 modes brightness automatically changing (low, medium, high). 6. Nice red LED large number display. 7. Three kinds of screen brightness, which can charge automatically in four periods of time: (12-hour) PM 11:00~AM 5:59 low brightness; AM 6:00~AM 6:59 medium brightness; AM 7:00~PM 5:59 high brightness; PM 6:00~10:59 medium brightness, and cycle everyday. 8. Thermometer: Temperature displays unit degree Celsius degree Fahrenheit which can switched. Temperature range: -10 - 50 degrees Celsius. 9. Humidity range: 10%-95%. 10. Power supply: DC 5V adapter. 11. Backup: 3 x AAA batteries (not included). 12. Can be placed in the car, office, home.