Led Eye Protective Student Desk Lamp,Work Lamp, Usb Powered, 3 Color Modes & Adjustable Brightness & Arm, Clip-On Table Light For Bedroom, Study, Reading, Office Lighting,1100lm Output, Metal Cantilever Design, Shockproof, Suitable For Complex Work Environments, Adjustable Arm Extends Up To 70cm, Foldable To 40cm, Clamplight Mounts On Horizontal And Vertical Desks, 270-Degree Adjustable Rotation For Multi-Angle Lighting, Special Eye Protection Design To Eliminate Glare And Flicker, 3-Level Color Temperature And 5-Level Brightness Adjustable, Patented Usb Power Boosting Design, Can Be Directly Plugged Into Usb Ports Of Power Supply Systems For Power Input