Flexible lighting head for precise illumination The LED head can be rotated 90 degrees anticlockwise, 180 degrees clockwise, and 45 degrees downward to meet your lighting direction needs. Three brightness levels with eyefriendly options One bright LED at 25 lumens with color temperatures of 3000K warm white, 4300K natural white, and 8000K cool white. Brightness can be adjusted from 10% to 100% by pressing the power button to suit your setting and reduce eye strain. USB rechargeable with long runtime Charges from any universal USB interface. Full charge in about 1.5 hours and provides up to 8 hours of lighting time. Mini size and folding for portable use Compact, folding design that clips onto a book. Pocketable and convenient for reading in bed or while traveling. Use scenarios Reading in bed: clip the light to the book, adjust the head angle, and set a comfortable brightness and color temperature. Travel or commuting: ultracompact and foldable, fits in a pocket or small bag for onthego reading. Desk study or library use: redirect light precisely onto notes or pages without disturbing others.