1. ***About this product*** 1. **Rechargeable and durable**: It uses a USB Type - C charging interface, which supports reversible insertion. Compared with other Micro - USB interfaces, it is more convenient to plug and unplug. The equipped 1000mAh rechargeable battery can provide up to 80 hours of strong, flicker - free lighting under normal reading conditions with a single lamp head in use. 2. **Three - color light and six - level brightness adjustment**: It has three practical color temperature modes, namely yellow (3000K), warm white (4000K), and cold white (6000K). Each lamp head has an independent switch and can achieve three - level brightness adjustment. You can freely choose a comfortable lighting setting according to different scenarios such as reading, knitting, camping, or repairing. 3. **Eye - friendly design and ergonomics**: It uses advanced LED lamp beads, which are flicker - free and have a blue - light filtering function. Whether used by children or adults, it will not cause eye fatigue. The lamp arm is flexibly adjustable, and you can adjust it to the most comfortable angle. It adopts an ergonomic neck - wrapping design, completely freeing your hands. 4. **No disturbance to others**: It uses a special narrow - beam (90°) angle design, which can provide sufficient lighting for the area you are illuminating without disturbing your resting companions due to overly bright light. 5. **Product guarantee**: It has applied for the original patent and passed the FCC, CE, RoHS, and PSE certifications. It offers a worry - free 18 - month warranty and considerate customer service. The product packaging box includes: 1 Glocusent LED neck lamp, 1 USB Type - C charging cable (24 feet), 1 user manual, and 1 bookmark. 2. ***Precautions*** Please use the included Type - C charging cable or a third - party certified charging cable. The product does not include an AC adapter.