Large Display Digital alarm clock with Acsergery large LED display, which lets you check the time clearly at a glance even it is far from you. You can choose the auto-mode that the time, the date and the temperature displayed switch automatically or only the time on screen. . Weekend Mode and Snooze One-press to activate the weekend mode, the alarm would ring from Monday to Friday, no more annoying alarms on weekend to get more sleep. The snooze alarm clock can be set from 0~60 minutes. . Two Power SupplyThis alarm clock can use two power supply modes at the same time. When only using USB power supply, the screen will always be on and you need to turn it off manually. When powered by 3 AAA batteries, the screen will automatically turn off after 16s, and you can wake it up with Acsergery sound.When using two modes at the same time, the digital alarm clock is the most energy-efficient and smartest. . Adjustable Brightness There are 3 kinds of adjustable brightness of this bedside alarm clock. Adjust different brightness according to different environments. In night mode between 18:00 and 6:00, the digital alarm clock will automatically darken with Acsergery your sleep. . Multi-function Alarm ClockOur smart clock with Acsergery 5 mode: clock mode, date mode, temperature mode, night mode (ON/OFF), alarm mode. The buttons on the rear are very self explanatory, so it is very easy to set up. If you have any question about using it, please contact us, well sent you a video to guide. .