4 Color Temperatures & 2 Dimming Modes: The Gritin reading neck light offers 4 color options: Amber (2000K), Warm White (3000K), Natural White (4500K), and White (6000K), allowing you to choose the ideal lighting for any environment. A short press on the brightness button selects 5 levels of dimming (10%-25%-50%-75%-100%), while a long press selects stepless dimming (0%-100%). This means you can precisely control its intensity, bringing unprecedented comfort and warmth to your reading time. 30-Min Timer & Ergonomic Design: The book light features a perfect illumination circle, ensuring no disturbance to your sleeping partner. Built-in thought