Curved Digital Clock LED Mirror Backlight 3 Level Brightness Desktop Clock with Temperature Humidity Display White Light Item Type: Curved Digital Clock Material: ABS Battery Type: 3 AAA Batteries (Battery Not Included) Function: 1. LED Time Display 2. 12/24 Hours Conversion　　　　　　　　　　　　　　　　　　　　　　　　　　 3. Alarm Clock / Snooze Function　　　　　　　　　　　　　　　　　　　　　　　　　 4. Temperature Display (Degrees Celsius ℃/Degrees Fahrenheit ℉)　　　　　　　　　　　　　　　　　 5. Temperature Range: -10℃ to 50℃, Convertible to Celsius and Fahrenheit 6. Humidity Range: 20% to 95% 7. Automatic Screen off Function, 4.5v Battery Power, 15 Seconds Automatic Screen off 8. Time and Temperature Switch Display 9. Three Levels of Brightness Adjustment 10. Five Function Buttons (MODE, ALARM, SNZ / LIGHT, UP, DOWN) 11. NIGHT MODE SETTING (18:00 to 07:00) 12. LED Indicator Will Always Be on When Using USB Cable