Total drop of the lamp is adjustable via retractable cable. Minimum drop is 43cm and maximum drop 133cm (total height from ceiling to bottom of the lamp). Takes one e27 light bulb. A standard e26 american/canadian size also fits (tested). Works with 220v as well as 110v. up to 250v (europe/uk standard).the wiring of this item may be original and might need replacement, if not specified otherwise.