Large Display & MultifunctionDigital 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, temperature mode, night mode (ONOFF), 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 flashes continuouslyAdjustable BrightnessSimply press UPDOWN to adjust the 3 levels of brightness (Bright Medium Low). Besides, the digital alarm clock will automatically be dim during 18:006:00 under the night mode (or you can set another period of time for your need). Just press and hold the snooze button for more than 3 seconds to turn off the display to prevent the screen from lighting up at night while sleeping. (NOTE: If you use a cable for power supply, the clock will always be on.)Working Day Mode & SnoozeOur digital desk clock, which have 3 alarm modes to choose when you want it to wake you up at fixed time: Monday to FridayMonday to SaturdayMonday to Sunday. Just long press "ALARM", and then use the "UP" and "DOWN" buttons to adjust the hourminutesnooze timeworking day mode. In addition, you can get 1~60 minutes of extra sleep by pressing the "SNOOZE" button when the alarm goes off, or press any other key to cancel the alarm.Voice Control & Power Saving Mode When Powered by battery, you can get a extra function voice control, which means you can activate the display by make some noise like clapping your hands, rapping on the table or touching the clock. In addition, the LED alarm clock will automatically turns off after 16 seconds of no operation and enters power saving mode, but the system still keeps normal timing and temperature and maintains the previous settings.Two Types of Power PupplyFor this alarm clocks for bedrooms, coming with 1meter39.37inch 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 USR alone, there is no time for memory function after power off).Warm TipsIf 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