[3 colors and 6 brightness adjustable] 3 useful color temperature modes: yellow (3000K), warm white (4000K) and cool white (6000K). Each head has an independent switch that adjusts 3 brightness levels. You can choose a comfortable environment for reading, knitting, camping or repairing etc. according to your needs. [Rechargeable and Long-lasting] USB Type-C is rechargeable and reversible compared to other Micro-USB, so it is easier to plug in. The included premium rechargeable 1000mAh battery provides up to 80 hours (general reading, single head) of powerful, unfading brightness. [Eye Protection and Ergonomic Design] With advanced LED lamp beads, no flicker and blue light filter design. Children and adults no longer have eye strain. The arms are soft and adjustable so you can get the most comfortable angle. Ergonomic neck design, completely hands-free! [Partner] Special narrow beam angle (90) design. It's bright enough for the area you're targeting, yet dark enough not to disturb your sleeping partner. Size: 4.2*7.2*30cm, 10*7.4*1.1in and weighs about 0.2kg