Diameter of this lamp is a whopping 45cm compared to the 35cm smaller more widespread model (orange in the photo with the chair). total height of the lamp is adjustable, length of the cable alone is 140cm and can be shortened to your preference. Takes one e27 light bulb (not included). A standard e26 american/canadian size also fits (tested). Works with 220v as well as 110v. default ceiling plate (canopy) is a 10cm diameter, 2cm high chrome piece. In case you have a hook in your ceiling let us know and we'll provide you with a dome shaped canopy (colour of the dome subject to availability). This piece has an attribution mark, i am sure that it is completely authentic and take full responsibility for any authenticity issues arising from misattribution, up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.