Executed in opaline glass and aluminium. the hanging lamp needs 1 x e27 / e26 edison screw fit bulb is wired, in working condition and runs both on 110 / 230 volt. our lamps are checked, cleaned and are suitable for use in the usa. 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.