Battery Operated Digital Clock, Alarm Clock Cordless Large Big Numbers 4 Dimmers [Large Display&Bedroom Decor]:Digital alarm clock with large LED display, which lets you check the time clearly at a glance even it is far from you. Alarm clock combines with alarm clock and time display function.The sleek and modern design also works for a great clock for office but also a good room decoration.[ Multi-function&Easy Operation ] : Our led clock with 5 normal display modes: clock mode, date mode, temperature mode, night mode (ON/OFF), alarm mode. 5 key operations: MODE,ALARM, UP,DOWN,SNOOZE/LIGHT.The buttons on the rear are very self explanatory, so it is very easy to set up![Adjustable Brightness&Snooze Function]: Press the UP/DOWN key to adjust the three-level brightnes, make you see the time clearly.The brightness is automatically dimmed from 18: 00 to 6: 00. and the automatic brightness interval can be set .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. You can also set snooze time by yourself. Perfect for heavy sleepers.[Voice Control & Power Saving Mode]:when the alarm clock powered by AAA battery, the LED display will be turn off after 16 second flashing and Enter to energy conservation. You can get a extra function – voice control, which means you can activate the display by make some noise like rapping on the table or touching the clock.When the alarm clock is powered by the data cable, the display will remain steady on.[Nighttime anti-disturbance& Time Memory] : In the non-setting state, you can press and hold the Snooze button for more than 3 seconds to turn off the display to prevent nighttime bright screen from disturbing sleep,After entering the off screen mode, you can press any key to open the display, but the voice control can not open the display .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)