[3 Colors] The neck lamp features 3 useful color temperatures: yellow (3000K), warm white (4000K), and cool white (6000K). It offers 3 brightness levels per arm with various lighting combinations to suit different needs. Choose yellow light for general reading, warm white for studying, and cool white for detailed tasks like sewing or crocheting. [Rechargeable & Long Lifespan] Unlike standard Micro-USB book lights, this USB-C rechargeable LED reading light is designed for ease of use and safety, especially for younger and older users. The USB-C port provides a universal, reversible connection. The built-in 1000mAh battery delivers up to 80 hours of runtime depending on settings, offering consistent, non-dimming illumination. [Eye Care & Ergonomic Design] This reading light produces no flicker or glare, helping reduce eye strain—ideal for nighttime reading in bed. Designed with an ergonomic shape that rests comfortably around the neck, it features flexible, adjustable arms to position the light at the most comfortable angle, providing hands-free convenience. [Partner-Friendly Lighting] With a narrow beam angle of 90 degrees, the light stays focused where needed without disturbing others nearby. It effectively illuminates your reading area while minimizing light spill, making it a great choice for shared spaces or bedtime reading with a partner.