Colors and 3 Adjustable Brightness Levels: 3 useful color temperature modes: yellow (3000K), warm white (4500K), and cool white (6500K). Each lamp head has an independent switch to adjust the 3 brightness levels. You can choose a comfortable setting for reading, knitting, camping, repairing, etc. Rechargeable and Long-lasting: The USB Type-C connector is rechargeable and reversible, making it easier to plug in compared to micro-USB connectors. The included high-quality 1000 mAh rechargeable battery provides up to 60 hours (typical reading, one lamp head) of bright, fade-free light. Eye Protection and Ergonomic Design: The rechargeable neck reading light uses advanced LED lamp beads, a flicker-free design, and a blue light filter. No more eye strain for children and adults. The arms are soft and adjustable so you can find the most comfortable angle. The ergonomic neck design completely frees your hands! Partner-friendly: Special narrow beam angle design (90°). It's bright enough for the area you're targeting, but dim enough not to disturb your sleeping partner. Hands-free Reading Light: When reading or performing repairs, you no longer need to hold a flashlight in your hand or mouth, or wear a headlamp. This rechargeable, flexible neck reading light helps you focus on what you're doing without having to worry about the light, whether you're reading in bed or in the garden/patio, walking the dog, performing repairs, DIY projects, working, or much more.