1.3 Color Temperatures and 3 Brightness Modes: It features 5 color temperatures—4500K mixed light, 6000K white light, and 3000K amber light. Shortpress the switch to turn it on/off; shortpress the color temperature button to cycle through 10%, 50%, and 100% brightness levels. 2.UserFriendly Design: Each time the reading lamp is turned on, it automatically adjusts to the lastused color temperature and brightness settings, eliminating the need for manual adjustments. 3.Angle Adjustable: The body of this LED reading lamp rotates 360°, while the lamp head swivels 90° left/right and tilts 45° downward. You can adjust the angle to focus the light precisely where needed, meeting your lighting direction requirements without frequent repositioning. 4.USB Rechargeable: This book lamp provides 4–40 hours of continuous light (depending on brightness). It uses a standard USBC port, and the included USBC cable allows easy charging via a power bank, laptop, phone adapter, car charger, etc.