5 Adjustable Brightness Levels & 3 Color Modes: Customize your lighting with 5 brightness levels (10%-100%) and 3 color temperatures (amber 1800K, white 6000K, mixed 3400K), perfect for reducing eye strain during long reading sessions. USB Rechargeable with Indicator Light: Built-in 500mAh battery provides 8-80 hours of use depending on settings. The USB charging indicator shows real-time charging progress, ensuring youre always prepared. Flexible Multi-Angle Adjustment: The clamp arm rotates 150, and the lamp head tilts 45, allowing you to position the light exactly where you need it. Durable Metal Clamp: High-quality metal clamp attaches securely to books, desks, or headboards without causing damage. Lightweight & Portable Design: Compact and foldable, this light is easy to carry, making it perfect for travel, bedside reading, or outdoor use.