Product size: 20.5 x 4 x 0.9 cm. Choose the appropriate brightness of the reading light according to the ambient light. Three adjustable color temperatures: 3000K - 5500K - 4500K; Very useful for reading on books or other devices like Kindle, iPad, tablet. Or simply move this foldable reading lamp to a flat surface to use as a small lamp. The clip light is cute in size and easy to carry in your pocket or small bag. Suitable for indoor or outdoor use. The clip is magnetic, so the USB clip lamp can be attached very securely to any furniture such as bedside tables, desks, desks, shelves, desks and even ceilings.USB rechargeable. No additional cables are needed. Maximum brightness: 50 lumens, power: 250MAH, 30mins to 1 hour after fully charged, the lighting time is 3-4 hours.Our small reading light emits 8LM soft cool white light at 5000K-6500K temperature, soft and healthy for the eyes, perfect for reading or working on screens of electronic devices. The elegant design makes it a perfect gift for children and reading enthusiasts.