3 Color Light & Eye-Protection & No Flicker Blue light blocking, no flicker, the light protects your eyes. 3 Color Modes& 5%-100% Brightness LED reading light has 3 colors reading light, warm & Cool and Mixed light(3000K to 6000K). 5%-100% brightness adjustable, meeting your different light demands in daily life. Short press to control color temperature, long press to control brightness. Equipped with 7 upgraded LED to deliver more uniform luminance than others. Flexible Neck& Heavy-Duty Clip The clip on light with 360rotated goose neck, could be adjusted to any position, give you plenty of light wherever you are. Anti-slip pad on the clip offers better clamping and protects pages or furniture from being damaged, which could be clipped on headboards, laptop, books, Kindle, and etc 600 mAh Rechargeable & Long Lasting Time Built-in high-quality rechargeable Li-ion battery (600mAh) offers you a reading time of about 30 hours (lowest brightness). The light is charged with a USB cable (included). Power indicator will show you the remaining power as a reference to charge the light timely. Lightweight & Portable The lightweight book light is only weights 2.5oz and may be held in hand after folding. You could easily take it everywhere with handbag and even pockets. Also perfect for outdoor activities Black & White color for choosing