Mingkeda Flexible Dimmable Desk Clamp Lamp, Black, without Bulbs CLASSIC STYLE: Classic metal lamp shade, never go out of style. INCANDESCENT DESK LAMP: Uses 40 watt E27 incandescent bulb, bulb not included DIMMABLE DESIGN: Simple button switch to turn on/off, easy to adjust the brightness you like. GOOSENECK: The strong but flexible gooseneck arm will hold the lamp in your desired position. MOUNT ANYWHERE: Stand on its own or clamp on a table are all available. The max opening of clamp is up to 2.36 inch, will clip onto almost any table, shelves that are vertical or horizontal.