With big and clear LED numbers display, time can easily read accross the room. This is a concise design but elegant looking smart LED digital alarm clock,which will be great mate and decor for your home and office. And backup battery will help saving all settings when USB cord power off. Feature - Color: Green. - Material: Plastic+Electronic Components. - Size: 12.5 x 7.5 x 4.5cm. - Battery: 4 x AAA Battery(Not Inclulded). - Large screen and eye-catching figureslets. Let you check the time clearly even it is far from you, Slim and simple mirror design blends perfectly in your bedroom, living room, Office, etc. - USB Cord Operated and Battery Backup.The clock powered by one USB cord which more economic for using. The backup battery will help to maintian all the settings when outlet power off. - Large and clear LED numbers make time is easy to read accross the room. Specially great for senior, elderly or the visual restricted person. - Warm Tip: Dear buyer, Due to lighting effect,monitor’s brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you! Package list: 1 USB Clock 1 x Power Cable