The ideal addition to any work area, this metal desk lamp features a dual Usb port built into the base. The industrial rubbed bronze finish base is topped by a Mission style lamp shade made from naturally occurring mica. Mica is a natural material that is cut very thin so that it is translucent and allows light to shine through, then applied to a thin poly backing to create the shade shape. The appearance of each shade will be unique due to the varying color tones and patterns found in natural mica. Two pull chains help control lighting levels.