RGB Digital Alarm Clock Mirror Surface Adjustable Brightness Modern Desk Clock with 180 Degree Rotatable Projector for Bedroom Office White Item Type: RGB Digital Alarm Clock Material: ABS Weight: Approx. 240g/8.5oz Unassembled Product Size: Approx. 185x78x25mm/7.3x3.1x1.0in Battery: Built in one CR2032 button battery 240mAh (shipped with built in battery) Time Selection: Switch 12 24 hours Snooze Function: Adjustable for 5 to 60 minutes Power Supply: The DC 5V is connected to the external power supply Clock Projection: Project HD time onto the ceiling or wall Dynamic RGB Color Display: Four RGB dynamic colors and seven color displays USB Charging: Comes with a USB port for charging electronic devices Large Mirror Design: Closed display, can be used as a mirror