This digital clock can project the time onto the wall or ceiling, so sleepers don't have to roll over to check it. The arm can be rotated 180 degrees for positioning, fine. Additionally, you can adjust the brightness of its primary display when needed. This digital clock comes with a 3-level light dimmer to find an optimal setting for your sleep sessions. This special protruding bedroom alarm clock comes with a buzzer volume, friendly for heavy sleepers who don't get used to the sudden loud sound. And by pressing the big SNOOZE button at the top, you can get an extra valuable 9 minutes of sleep until this alarm goes off. The device is also equipped with practical additional features which is a unique backup battery system. This one is important because it can keep all settings even after a power and can be used for about 2 years. This product with an adapter to use, NO power. Nice and stylish design, packaged in a beautiful gift. An excellent choice to show your care and an unusual idea to surprise. This digital alarm clock is a perfect gift for anyone, whether for old or young, male or female, boy or girl. Also suitable for all festivals such as 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 : USB Battery: 2032 button cell (battery not included) < p>Material: ABS Color: As Shown Package Contents: 1 x Alarm Clock 1 x USB Cable p> Only the above package contents, 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 permissible measurement error is +/- 1-3 cm.