Product color black battery: lithium-ion / 300mAh color temperature: warm light 4 brightness levels (button) power: 5W material: ABS plastic Color rendering index: 80 Scope of delivery: 1 * book clip light Reading lamp eye protection The book lamp with eye protection function has no flickering, no shadows and no glare. Provide natural and soft light even if it is used for a long time. The compact reading light doesnt tire your eyes and protects your eyes from damage from shine and radiation. Enjoy reading time without disturbing your partner or roommate. Rechargeable USB reading lamp The bookmark light has no tangled cables and can be easily charged via the USB port. There is no need to deal with battery replacement and cable entanglement issues. It only takes 1 hour to fully charge the USB indicator light and the indicator light changes from red to blue. Flexible reading lamp clip The night reading lamp can be bent at will and easily attached to books, iPads, notebooks, books ; cher shelves, etc. are attached. The position of the bookmark lamp and the book clip can also be adjusted as required to make reading more comfortable and pleasant. Mini Led clamp light The small and compact design is easy to carry. The mini reading lamp weighs only 40 grams and can be taken with you at any time when traveling, at work, on the campsite, etc.