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. 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 continuously<br><br> 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.)<br><br> 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.