The lamp requires two e27 / e26 edison screw bulb, is wired, functional and runs on both 110 / 230 volts. our lamps are tested, cleaned and are suitable for use in the usa. For use in the usa, you would only need to change the plug or get a vacation conv i have official proof of authenticity such as vintage catalogs, designer records, or other literature sources and take full responsibility for any authenticity issues arising from misattribution, european plug (up to 250v).the wiring of this item may be original and might need replacement, if not specified otherwise.