Nap Button - This alarm clock comes with a nap button, allowing you to get extra sleep time. After 5 minutes, this digital alarm clock will wake you up again until it turns off. Intelligent Light Sensor - This alarm clock has a switch that turns on the backlight, so we can read the time in the dark or in the middle of the night to know the time. And it definitely won't be too bright when sleeping. Backlight function - Touch the snooze button on the top of this battery powered alarm clock, and the display screen will light up for 5 seconds. If the light is too dim to see, checking time in the dark can be helpful. 2 Display Formats - Our digital alarm clock can be displayed for 12 or 24 hours, as well as switched between Celsius or Fahrenheit. [Battery powered] - As it is battery powered, you can place it anywhere you need it. This product adopts a low current LCD display screen. It is recommended to use 3 * AAA carbon batteries instead of alkaline batteries. For the working time of the alarm clock, because it uses a LCD display and has low power consumption, it can work for a long time when you use a brand new battery. When the battery runs out of charge, the LCD screen will dim. Please replace the battery to make it work properly again. Shell material: beech wood Dial material: organic glass Display screen type: LCD Display type: Number Special function: decoration Special function: thermometer Special function: alarm Special function: 24-hour indication