iWG Portable 3W Led Desk Light Touch Sensor Control Table Lamp 3 Level Adjustable Brightness USB Rechargeable White Reading Lamp This LED Desk Lamp would apply Touch Sensor Switch, with 3-levels different brightness. Adjustable brightness can meet various demands of different environments. Build-in Rechargeable Battery(DC5V 500mAh) Charged by USB cable 2.0 / DC plug. Flexible bendable silicone stem, designed to adjust light direction by preference Energy saving LED light source no radiation no flicker,eye partner Lamp can be adjusted 360 degrees, user-friendly design Low consumption and long lifespan, the battery can be cycle charged. Special design of touch control panel and dimmable, elegant and simple structure, this LED desk lamp is the ideal lighting source for office, home, dorm, etc. Energy-saving and eco-friendly.