[3 Colors 6 Adjustable Brightness Levels] Unlike other bed reading lights, neck lights have 3 useful color temperatures: yellow (3000K), warm white (4000K), and cool white (6000K). It has 3 brightness levels per arm and various combinations of reading light settings to suit your needs. For example, a yellow light for general reading; a warm white for studying; cool white for precision sewing or crocheting.[Rechargeable Long Lifespan] Compared to other Micro-USB book lights, our USB-C rechargeable LED book light is user-friendly and safer for the elderly and young. This is because USB-C is a \"one size fits all\" design, easy to connect to any side. In addition, the built-in 1000mAh battery provides up to 80 hours of battery life (depending on eReader lamp settings). It keeps you away from the daily burden of non-dimmable lights.[Eye-Caring Ergonomic Design] Our book reading light does not produce flicker or dazzling light, saving you from eye fatigue. This is a perfect bedside reading lamp for reading at night. In addition, the reading lights for night come with an ergonomic shape, which clings to your neck; the arms are flexible and adjustable, making it easier to adopt the most comfortable angle - an ideal lighting aid for hands-free activities.[Compatible with partners] This reading light has a narrow beam angle (90°), which is low enough not to disturb people nearby. At the same time, the neck light can illuminate the specific area you want to illuminate and emit abundant light without producing light interference for your partner. A perfect reading light for readers in bed.Rechargeable Neck Reading Light, Lamp for Reading in Bed, 3 Colors_tfrf