The lamp socket is designed for standard e27 light-bulb (not included) but also takes your standard e26 size (tested). We can change the eu plug to a vintage looking us plug (when ordering let us know your preference). All free of charge. Works with 220v as well as 110v. Total height of the lamp is adjustable, length of the cable is 120cm and can be shortened to your preference. up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.