USB charging port design: It has a USB port and can be charged with any standard USB interface. You don't need to carry a separate USB charging cable. After 40 to 60 minutes of charging, the bulb can operate for 2 to 3 hours. Flexible and adjustable angle: You can adjust the reading angle to suit your eyes. The LED lens can be rotated 45° downwards, rotated 90° horizontally to the left and right, and flexibly folded with a stand to adjust to the most comfortable angle for you. Portable Design: Its compact, small, and lightweight design is very convenient to carry and use at home or on the go. It is very suitable for reading on a clipboard and is a good aid for reading enthusiasts. Adjustable Brightness Mode: The brightness can be adjusted from 100% to 50%, and the most suitable reading brightness can be customized. Its soft light provides readers with a precise reading mode when reading books. Versatile Use: The new design of the clip-on reading lamp can be used not only as a reading