1. [Large LED Display]Our alarm clock shows the large font & date, with time alarm, time memory and snooze function. It also can shows the temperature(°C/°F).<br> 2. [3 Brightness Adjustable]This alarm provides 3-level brightness, anti-disturbance function at night, and the display screen can be turned off at night. The alarm clock works silently, creating an peaceful environment for sleep.<br> 3. [Voice Control]You can voice control to open the display when using AAA battery power, convenient for night use. Besides, the display automatically turns off after 16 seconds of no operation.<br> 4. [Dual Power Supply]Alarm clocks can be powered by USB cable or 3 AAA batteries (batteries are not included). It can be powered by three AAA batteries are not included. It can also be powered by an external DC 5V power supply (plug in is recommended). Use), with power saving mode, longer life.<br>