Adjustable Brightness - The digital watch has 4 levels of brightness with high quality LED lighting. You can choose the brightness that is most easy on your eyes. Multi-function alarm clock: 2 display modes of the digital alarm clock show the time (12/25 hours) (C / F) or the date month of the year. Perfect decoration for office, living room and bedroom. 3 convenient alarm settings: 4 groups of alarm clocks can be set. You can use it to get a repeat function. Best alarm clock for bedroom and heavy sleeper. Dual Powered: This wooden alarm clock comes with a USB power cable or can be powered by 5 AAA batteries (not included). Note: Since the LED alarm clock consumes a lot of electricity, it may run out within 3 days if the battery is used. We recommend customers to use power lines. Power saving and voice control: In power saving mode, the screen will turn off after 10 seconds, so you can sleep wonderfully. If you press a value higher than 61 dB or hear a noise at a short distance, the wooden alarm clock will be activated. He won't bother you.