MULTI-PURPOSE: ideal for music stands, reading, piano, orchestra pits, concerts, work tables, DJs, craft tables, computers or as podium lighting , etc. It is portable and lightweight. Easy to carry while traveling or reading in bed at night. USB: Power your music stand via USB (USB cable included). You can use the USB cable to connect to the USB port on any devices such as laptops, power bank to power the light. Or connect the USB cable to the 5V/1A wall charger (not included). NON-FLASHING &; EYE CARE: This book lamp with non-flickering light that protects your eyes. There are 4 levels of brightness which try best to offer the brightness you want and protect your eyes. 2 flexible arms can move as you like. Bright enough to illuminate an entire sheet of paper or a book. CLIPER & FREE HOLDER: Attach it to almost anything. The double silicone pad protects the gripped surface from damage. It can also be placed on a desk with the base as a normal desk lamp. The double gooseneck is 360; adjustable. Size: 10*7.5*6.4cm Note: The data is manual measurement, please allow 1-68cm error, due to light and screen differences , there will be a certain color difference, the specific received in kind prevail.