Dimensions: 13.5cm x 7.5cm x 4.5cm The small table clock is powered by 3 AAA batteries, works without connecting a charging cable, and the alarm clock can be moved anywhere. (The alarm clock does not contain batteries). Temperature display +/F mode---The digital clock has built-in thermometer function, which can monitor the indoor temperature and protect the health of you and your family. /F 2 display modes, one key switch. The alarm clock has a date function, which can display the month and date; 12/24H two time display modes can be switched arbitrarily according to personal reading habits. This alarm clock is fully functional, the ringtone is the progressive ringtone of BB, the ringing time lasts for one minute, and the alarm can be paused by pressing the snooze button for 5 minutes. Suitable for light sleepers, the LED display has large numbers, and myopic eyes can still see the time.The alarm clock is equipped with a photosensitive sensor. There is no light at night, and the LED blue night light will light up slightly. The digital alarm clock has a built-in light sensor. When the LCD clock is placed in a dark environment, it emits a soft light, which is convenient for you to read the time, but does not disturb your sleep. Variable Ringtones - The alarm's buzzer sound lasts for 60 seconds, the sound and frequency will gradually increase, and the wake-up effect is better, ideal for heavy sleepers.