Large Display & Multi-functionDigital 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 smart clock with 5 mode: clock mode, date mode, temperature mode, night mode (ON/OFF), alarm mode. Adjustable BrightnessJust press UP/DOWN to adjust the three levels of brightness (Bright/ Medium /Low). Besides, the bedside alarm clock will auto dim during 18:00-6:00 when in the night mode, or you can set another periods 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 to interfere with sleep. (NOTE: If you use a cable for power supply, the clock will always be on.) 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. Working Day Mode & SnoozeThere are 3 alarm modes to choose when you want it to wake you up at fixed time: Monday to Friday/Monday to Saturday/Monday 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 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. USB & Battery Powered For this dual alarm clock, coming with 1meter/39.37inch 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 USB alone, there is no time for memory function after power off).