This digital clock can project the time onto the wall or ceiling, so sleepers '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 the loop of this alarm. The device is also fitted with convenient additional features which is a unique 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, and an unusual idea to surprise. This digital alarm clock is a perfect gift for everyone, no matter for the old or the young, men or women, boy or girl. Also suitable for any festival like birthdays, Christmas, 's Day, Father's Day, Mother's Day, etc. Style: Green USB Input: DC 5V Projection Distance: 0.5-5m Hour Format: 12H/ 24H Power Type: USB Battery: 2032 button cell (Battery not included) Material: ABS colour: As shown Package Contents: 1 x alarm clock 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.