Battery digital alarm clock: battery use (3 * AAA 1.5V not included), can be used without plugging in, compact appearance, easy to carry, digital screen display, alarm clock setting is very simple, and the instructions are clear and easy to understand.The alarm clock is available in black, white, pink, blue and green, five colors for your choice. Light sensing control function: After turning on the sensor switch, the background light can be controlled according to the light intensity of the external environment, which can make a light sleeper close his eyes without making noise. Snooze and light function: when the alarm time is reached, press the snooze button and the display will light up, allowing you to sleep for 5 minutes and then it will ring again, so you wont miss important appointments. Temperature and time display: display the surrounding temperature of the alarm clock (/), monitor the indoor temperature at all times, protect the health of you and your family, two kinds of time for you to choose (12/24Hr), date, alarm time, at a glance. Gradual ringtone: the alarm clock emits a dichroic sound, the sound and frequency gradually increase over time, awakening you in a deep sleep, the wake-up effect is very good.