9 Brightness Modes : Our reading light has 9 modes that you can adjust to 3 color temperatures (amber 1600K - white 4000K - cool white 5000K), 3 brightness levels or stepless dimming, which is suitable for you for different reading environments. Soft Light Eye Protection : The light of 3 different color temperatures (1600K-4000K-5000K, from cold to warm) and 3 brightness intensities are more stable, soft and flicker-free. The LED reading lamp allows you to read comfortably for hours. 360 Flexible Neck Mini Size : The improved 360 flexible reading light neck allows you to adjust your lamp to any angle you desire, providing you with 360 omnidirectional lighting. Its mini size and compact design also make it easy to carry. Long Working Time Power Indicator : Built-in rechargeable 600mAh lithium battery, book light provides lighting time of up to 40 hours (at low brightness setting) with only 2 hours of full charge, allowing you to enjoy longer wireless reading time . With the battery indicator, it is easy to know the remaining charge and charging status. Multiple Portable Applications : At only 63g, the e-reader is light. The clamp is well designed and can open 5-25mm, suitable for books, tablets, e-books