Various use- Equipped with 4 LED lamp beads without strobe,it's not just a reading light for bed, but also suitable for crocheting, knitting, repair, dog walking, work,outdoor,etc. When you traveling, camping, power outages, can be making bright enough personal lighting space. Lightweight and Protable- Book Reading Light is 3.7oz weight, its lightweight and compack design makes it easy to pack into a bag while on the go. Ergonomic design with a soft anti slip rubber pad to ensure it’s reduce the neck burden. Rechargeable and Long Lasting- The Neck Light is with built-in 1000mAh long lasting battery which provides up to 30 hours of lighting time in the lowest setting.It comes with a USB-C cable and it lasts 8-30 hours after 3 hours fully charged of power.You can charge with USB devices such power bank, computer, USB adapter, Car charger. Flexible Arms- LED book lights have 360° adjustable flexible goose neck, can change any light directions you want. You can bent it to angle you like and adjust easily however you want it to.The separate arms are about 11.8inch long, can be stays well around neck, arms,legs, etc. 3 Color Adjustment- Book light has 3 color temperature modes(1600K amber light, 4200K mixed light and 7000K white light). Just tactile the switch to change the light working level.You can choose a comfortable setting for reading, repairing, knitting, or camping etc.