1. Turn on / off light: Lightly touch the induction switch so you can turn on / off the lamp 2. 24-LED high brightness white light no flicker not hot maintenance-free close to natural light better protection for the eyes energy saving and more environmentally friendly. 3. LED brightness adjustable: Long press the induction switch for 3s freely adjust the LED brightness. Leaving your fingers after reaching the brightness you desired. 4. When the light become weak (without adjustment) meaning it needs charging for continuous use. Other power adapter requirement: Input AC 110~240V output DC 5V / 500mA. Comes with a USB charging cable.