Efficient Lighting: The reading light includes 2 14LED light heads, 2 kinds of lights can be turned on individually or at the same time. Bright Light has 9 lighting modes: adjust cool white, daylight white (working) or warm white (idle) to make the light even and comfortable. USB charging: The red/green indicator light design of the desk lamp book allows you to see the charging status of the clip indicator light. After 4 hours of USB charging, the built-in 1200mAh lithium battery has a longer battery life of 12H-48H. The USB cable is included in the package, which can support mobile power adapter, computer, 100-240V adapter, car charger, etc. (adapter not included) . Non-slip and Swivel: Flexible ince led bulb with any angle swivel and lower silicone design, 4cm wide, maximum pinch point, provides more stability and flexibility to this bedside lamp. The 360 rotating gooseneck creates more uses such as orchestral desks, desks or nightstands, books, flat keyboards and more. Lightweight and portable: The variable intensity reading light weighs only 0.09kg. The mini size can fit in a pocket or travel bag, although it's an extra relief for makeup. You can place a small bedside lamp on a book, tablet, e-reader, or the edge of a desk, etc.