Specification: Material: Acrylic Voltage: 5V LED Lifespan: 100,000 hours Power source: USB or 3x AA battery < br/> Features: - The 3d optical illusion lamp plays tricks on your eyes, it is a light guide glass plate in reality. But it looks like a real 3D LED light at night. - It comes with energy-efficient LED bulbs which have a lifespan of 100,000 hours. It is perfect for display in hotels, bedroom, living room, office, as a night lamp, or any other way you want to use. - Smart Touch Button: You can change the color by pressing on the button, press it to turn on the lamp, and press it to switch to another light. -Very low conductive heat, will not be hot after long working, soft and warm light, will not harm the eyes . Package includes: 1x 3D Illusion Lamp 1X USB cable 1X User Manual(English) Please note: 3D just visual, the lamp itself is flat. Acrylic board covered with protective film, put the protective film removed before use. Due to different computer monitors, the color of the actual items may vary slightly from the online images. Due to different measurement methods, please allow 0.4'' - 0.8'' dimension deviation. If you have any questions, contact us. We will offer you our best service. < br/>