Large Display & Multi-function: Digital alarm clock with large LED display (6.3"x0.7~1"x2.36"), which lets you check the time clearly at a glance even it is far from you. Our desk clock with 5 mode: clock mode, date mode, DST mode, night mode (ON/OFF), alarm mode. The buttons on the rear are very self explanatory, so it is very easy to set up! The "colon" between the hour and minute display fixed non-flashing.Adjustable Brightness: Simply press UP/DOWN to adjust the 3 levels of brightness (Bright/Medium /Low/Ultra Low/Off). Besides, the digital alarm clock will automatically be dim during 19:00-7:00 under the night mode (The time of night mode is fixed and non-adjustable). Alarm clock screen will turn off automatically after 10s, press any key to light it up. (NOTE: If you use a cable for power supply, the clock will always be on.)Working Day Mode & Snooze: Our digital desk clock, which have 4 alarm modes to choose when you want it to wake you up at fixed time: Monday to Friday/Monday to Saturday/Monday to Sunday/Saturday to Sunday. Just long press "ALARM", and then use the "UP" and "DOWN" buttons to adjust the hour/minute/snooze time/working day mode. In addition, you can get 9 minutes of extra sleep by pressing the "SNOOZE" button when the alarm goes off, or press any other key to cancel the alarm.DST Function & Power Saving Mode: When Powered by battery,the LED alarm clock will automatically turns off after 10 seconds of no operation and enters power saving mode, conserving battery life and ensuring uninterrupted use, but the system still keeps normal timing and maintains the previous settings.Meanwhile, the built-in DST function automatically adjusts the time without manual intervention.Two Types of Power Supply: For this alarm clocks for bedrooms, coming with 1.5meter/59inch power cord (AC adapter is not included)- very good for battery saving, and it comes with time memory function when you charge by AAA batteries. (When powered by type-c cable alone, there is no time for memory function after power off).We recommend that you install the battery and use the Type-C for continuous power supply, the alarm clock will continue to standby with the screen on and have the time memory function after power off. This way you can check the time at any time and save power!Warm Tips: If the LED clock can't work and display, Please first check the alarm clock to determine whether the LED screen is turned off or the alarm clock is not working. a) When by USB powered, please check whether the two ends of the data cable are not in good contact or not plugged in, or check whether there is a problem with the charging port. b)When it is battery powered and does not light up, please check whether the batteries are properly placed, please ensure that the positive and negative poles of the batteries are correctly placed