This digital clock can project the time onto the wall or ceiling, so sleepers don't have to roll over when checking it. The arm can swivel 180 degrees for positioning, a fine. Furthermore, you can adjust the brightness of its primary display whenever needed. This digital clock comes with a 3-level brightness dimmer to finding an optimal setting for your sleeping sessions. This particular projecting alarm clock for bedrooms comes with a buzzer volume, friendly for heavy sleepers who 't get used to the sudden loud sound. And pressing the big SNOOZE button at the top, you can get extra precious 9 minutes of sleep till loop of this alarm. The device is also fitted with convenient additional features which is a backup battery system. This one is vital because it can retain all settings even after a power outage, and can be used for about 2 years. This product with an adapter to use, NO battery power. Sleek and stylish design, packed in a beautiful gift. A great choice to show your care,