[Large LED display] Our player shows the big font and history, time alarm, time memory and postponement function. It can also display the temperature (° C/° F). . [3 brightness adjustable] This alarm provides 3 -level shine, discomfort prevention function at night and can be closed at night nights. The alarm clock creates a peaceful environment for sleep by working quietly. . [Sound Control] AAA You can make audio control to open the screen while using the battery power, suitable for night use. In addition, the screen automatically switches automatically when no operation is performed for 16 seconds. . [Double Power Supply] Alarm clocks can be operated with a USB cable or 3 AAA batteries (batteries are not included). Three AAA can be operated with batteries, not included. It can also be operated with an external DC 5V power supply (plug is recommended). Use), with power saving mode is longer lasting. . [Power -saving mode] Working with battery power, the screen automatically closes when no operation for 16 seconds and enters the power saving mode, but the system still maintains normal timing and temperature and maintains the previous settings.