<p>[Rechargeable and Durable] USB Type-C is rechargeable and reversible, so it's easier to plug in than other micro USBs. The included 1000mAh rechargeable battery provides up to 80 hours (normal play, single head) of powerful, non-dimmable brightness.</p> <p> </p> <p>3 colors and 9 brightness settings3 useful color temperature modes : yellow (3000K), warm white (4000K) and cool white (6000K). Each head has an independent switch that adjusts 3 levels of brightness. You can choose a comfortable setting for reading, knitting, camping or repairing as you like.</p> <p> </p> <p>[EYE PROTECTION AND ERGONOMIC DESIGN] With advanced LED lamp beads, no flicker and blue light filter. Children and adults no longer have eye strain. The arms are flexible and adjustable so you get the most comfortable angle ergonomics around your neck, with complete freedom of your hands.</p> <p> </p> <p>Box of 9 products contains: 1 * Glocusent LED Neck Light 1 * USB Type-C Cable (24'') 1 * User Manual.</p>