[Quiet Sleep Function] This beside led alarm clock has quiet sleep function, which automatically changes half brightness avoid eye damage. The sleep function allows an additional 5 minutes of sleep time. You can sleep well with it. When you want to see time at night, you can see the projection, no need to turn on the light. [180 Rotatable Projection] This projection alarm clock has 180 rotatable projector, you can push and hold the projection button and rotate the angle to read more comfortable. Projection alarm clock clearly projects the time image on the wall or ceiling in the range of 9.8-16 feet. [Temperature Notification] The mirror digital alarm clock beside has temperature notification, dual alarm and date display. [USB Charging Ports] This alarm clock projection is powered by USB cable, and you can choose to be powered by a wall socket or a power bank. This plug-in electric alarm clock is easy and portable to use.