1.[3 Colors & Infinite Adjustable Brightness] 3 useful color temperature modes: yellow (4000 K), warm white (4500 K) and white (6000 K), Each head has an independent switch for Infinite levels of brightness Adjustable. Long press the Shift key to gradually decrease the brightness. &àgrave; from 100%. You can choose a comfortable setting as you like for reading, knitting, camping, or repairing, etc. 2.[Rechargeable & Durable] USB Type-C rechargeable which is reversible and therefore easier to use. plug in compared to other Micro-USB. Until 80 hours (general reading, single head) of brightness powerful and non-decreasing thanks to 1800mAh rechargeable battery included, narrow beam angle (90°). It is bright enough to cover the area you have placed and loud enough at the same time not to disturb your sleeping partner. 3.[Eye protection design & [Ergonomic] No flicker and blue light filter with advanced LED beads. No more eye strain for children and adults. The arms are flexible and adjustable so you can get the most comfortable angle for you. Ergonomic design around the neck, and the hands are completely free. 4.[Adjustable and Foldable]: The lamp head can be rotated to any angle. 270° and you can easily adjust an angle and brightness. comfortable that are suitable for your needs. It can also be folded. and folded in desk lamp mode and placed on the desktop in a balanced and stable manner, which is more convenient for your writing.