3D LED Wall Clock Modern Digital Table Desktop Alarm Clock Nightlight Wall Clock For Home Living Room Office 24 or 12 Hour Specifications Material: Acrylic+ABS Battery: CR1220 (For recording time when cutting off power, the clock is powered by USB cable only) Item Size: 24. 5 * 10 * 2. 3 cm / 9. 7” * 3. 9” * 0. 9” Package Size: 26. 5 * 10. 5 * 5. 5 cm / 10. 4” * 4. 1” * 2. 16” Product weight: 0. 15kg/0. 33lb Package weight: 0. 25kg/0. 55lb Comprehensive settings: 1. General setting: Long press "set" button to set "12/24H"→“Time”→"Year"→"Date" by "+" and "-" buttons. ( tap "set" button to enter next setting) 2. Brightness mode setting: Tap "+" button →"L-AU" three levels of automatic sensitivity ; "L-01" first brightness ; "L-02" second brightness ; "L-03" third brightness; turn off the display. 3. Display mode setting: Long press “+" button to switch display mode: (1) Display Time Only (2) Time, Date, Temperature Cycle Display Alarm settings: 1. Tap "-" button to open/close alarm 2. Long press "-" button to enter alarm setting 3. Start snooze: when the alarm clock rings, tap any key to start snooze, alarm indicator light flashes slowly 4. Turn off the alarm: when the alarm clock rings, long press any key to turn off alarm, enter the next alarm state Package Includes: 1 x 9. 7" LED Wall Clock 1 x 9. 8 ft. USB power cable 1 x USB Power Adapter 1 x User Manual Warm Tips: The temperature display function can't work normally, and we are still working on this because of software bug, hope you could understand.