Optional Color Temperature: Our reading books can meet your different needs while protecting your eyes. It is designed with cold white light and warm light. Stepless brightness adjustment: The brightness of the reading lamp can be adjusted steplessly. When a color light is on, long press the power switch to change the brightness. No extra USB cable needed: No extra USB cable needed, the tail connects directly to any USB port to charge. It can be used for 2-3 hours after fully charged. Sturdy: The sturdy reading lamp can be used with various e-readers and paper books. It can be fixed on a book, tablet, car sun visor or any place with a thickness of 05-2 cm.
