Product material: plastic Size: 90mm*250mm*120mm Brightness adjustment: three-level dimming Switch: touch switch Power adapter mode: USB power adapter Colors: White, Black Quantity: 1 piece Package content: 1 piece * Clip-on lamp 1. The reading light has 3 color modes with 3 brightness adjustments each. The touch control makes it suitable for different scenes and people who are sensitive to light. 2. Read light with your own eyes The circular lamp holder clamp lamp simulates the diffuse reflection of natural light, reduces multiple shadows, has a clear view, no flickering and no glare. There is no blue LED to protect your eyes from harm, and the soft light allows you to read in bed without disturbing your partner. 3. Rechargeable reading lamp The integrated 1800 mAh USB lithium battery and the reading lamp provide up to 28 hours of continuous light (low brightness setting). Fast charging interface, only 3 hours, you can read anytime anywhere without connecting cables. 4. Heavy Duty Clip and Flexible Neck The heavy duty padded clip can be attached to the edge of any furniture without scratching it. Sufficient grip can fix it anywhere. The book lamp has a flexible neck that can be precisely bent and rotated so that you get plenty of light regardless of where you are