USB POWERED ALARM CLOCK: A built-in rechargeable backup battery makes the bedside clock work and it saves the settings of your recharging clock in the event of a power failure, and you can also plug in the AC adapter (included) to power the clock VOICE CONTROL FUNCTION: The digital clock can work with voice control and when the clock detects the sound over 90 dB, the LED display lights up. The display of the digital alarm clock can also be lightened up by touching any buttons if you want the display always on, you can keep the clock connecting to the power all the time 2 ALARMS & SNOOZE & 10 ALARM SOUNDS WITH ADJUSTABLE VOLUME: The bedside clock has dual alarms and there are 10 ringtones for you to choose to meet your need. The volume can also be adjusted. With the snooze function, you can just touch the Snooze/Light button to get extra 5- minute snooze time and this can be cycled until you press any other button TEMPERATURE & ADJUSTABLE BRIGHTNESS: One more function and the clock can test the indoor temperature. During the charging, the LED screen always lights up and automatically adjusts the brightness in 3 levels for different periods and it auto dims during 7:00 pm-7:00 am. The brightness can be also adjusted in 4 levels manually MODERN DESIGN: The modern design is suitable for any decoration and the clock does not take up too much space. You can put it in your desk, bedroom, living room to decorate your room. With simple operation and clear indicators, the led clock is a good gift for children and the elderly