[3 Colors] The neck lamp offers 3 color temperatures: yellow (3000K), warm white (4000K), and cool white (6000K). It features 3 brightness levels per arm and multiple lighting combinations to suit various needs. Yellow light is ideal for general reading, warm white for studying, and cool white for detailed tasks like sewing or crocheting. [Rechargeable & Long Lifespan] Unlike Micro-USB book lights, this USB-C rechargeable LED book light is user-friendly and safe for all ages. The USB-C port has a reversible design for easy charging. A built-in 1000mAh battery provides up to 80 hours of runtime depending on settings, delivering consistent, non-dimming light with less frequent recharging. [Eye Care & Ergonomic Design] The reading light produces flicker-free, glare-free illumination to help reduce eye strain, making it suitable for nighttime reading in bed. Its ergonomic neck design ensures comfort, with flexible, adjustable arms that allow precise light positioning for hands-free use. [Partner-Friendly Lighting] With a narrow 90° beam angle, the lamp provides focused brightness where needed while minimizing light spill, so it won’t disturb others nearby. This makes it ideal for shared environments during nighttime activities.