[ADJUSTABLE BRIGHTNESS]: Control your lighting from 10% - 100% brightness to get the perfect lighting for your setup. The built-in extended battery provides hours of illumination you can plug the light in to your computers USB port and run indefinitely off of external power! Put the suction cup upside down directly on the desktop, and then install the fill light , which is simple and convenient. give you the flexibility to soften your light and get that professional glow colour: black Material: ABS size: 10.7x6.5x1.5cm Package Contents: 1 x Fill Light Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.