LED Digital Clock 3 Level Brightness Snooze USB Battery Powered Electronic Mirror Alarm Clock with Temp Humidity Display White Light Item Type: LED Digital Clock Material: ABS Size: Approx. 16.5 x 7.3cm / 6.5 x 2.9in Battery Type: 3 x AAA Batteries (Shipped Without Batteries) Features: 1. LED time display 2. 12/24 hour conversion 3. Alarm clock, snooze function 4. Temperature display (℃, °F) 5. Temperature range: -10℃ -50℃, can be converted to degrees celsius and fahrenheit 6. Humidity range: 20%-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 or LIGHT, UP, DOWN) 11. Night mode setting (18:00-07:00) 12. LED indicator will always be on when using USB cable