Purpose:High Quality LED Neck Reading Light, Bed Book Light, 3 Colors, 6 Brightness Levels, USB Rechargeable Blue [3 Colors and 6 Brightness Adjustable] This Glocusent reading light has 3 useful color temperature modes: Yellow (3000K), Warm White (4000K), and Cool White (6000K). Each neck light head has an independent switch for 3 dimming levels. A great neck light for crocheting and reading in bed, knitting, camping, or repairing, etc. [Rechargeable and Long-Lasting] This neck light is reversible and easier to plug in than other craft neck lights that charge via micro USB. It provides powerful, non-fading brightness for up to 80 hours (total reading, single head) with the included high-quality rechargeable 1000mAh battery. A long-lasting rechargeable USB book light for reading in bed. [Eye Protection and Ergonomic Design] Glocusent reading light adopts advanced LED lamp beads with blue light filter and flicker-free design. Compared with other reading lamps on the bed, you will no longer feel eye fatigue with Glocusent book lamp. The lamp arm of the neck reading lamp is flexibly adjustable, so you can choose the most comfortable angle. This ergonomically designed neck reading lamp is the best hands-free reading device!