Clip-on Rechargeable LED Book Light,Dailymate Reading Lamp in Bed, Flexible 2 Arms with Power Button, AC and USB Charger,Perfect for Night Reader Built-in high performance & high capacity rechargeable lithium battery, NO more wasting money on battery. USB cable and AC charger to charge. Read for up to 10 hours without charging. Eyes-care: No flickering, no dark area,human friendly 2 light setting. Power button on top of each light as you can choose to have one light on or two lights on Adjustedclampcanclipvariousthickness&shapeobjects.Freelyclipandholdyourhardcoverbook,musicstand.Functionasdesklamptoclipondeskside,bedside,workbench,lap-top. Small,light-weight & portable - ideal light as book reading light, flashlight for travel, perfect for trips &camping Lovely to read at night without disturbing others. This reading light comes with strong padded clamp to clip your thick book or bedside and flexible arms adjust the light in the perfect position for what you are reading